View source for Chuck Grassley

{{Short description|American politician (born 1933)}}
{{pp-vandalism|small=yes}}
{{Pp-semi-indef|Reason=Vandalism}}
{{Use American English|date=November 2025}}
{{Use mdy dates|date=February 2021}}
{{stack begin}}
{{Infobox officeholder
| name                = Chuck Grassley
| image               = Chuck Grassley official photo 2017.jpg
| caption             = Official portrait, 2017
| office              = [[President pro tempore of the United&nbsp;States&nbsp;Senate]]
| term_start          = January 3, 2025
| term_end            = 
| term_start1         = January 3, 2019
| term_end1           = January 20, 2021
| predecessor1        = [[Orrin Hatch]]
| successor1          = [[Patrick Leahy]]
| predecessor         = [[Patty Murray]]
| successor           = 
| office2             = 45th [[Dean of the United States Senate]]
| term_start2         = January 3, 2023
| term_end2           =
| successor2          =
| predecessor2        = [[Patrick Leahy]]
| office3             = Chair of the [[United States Senate Committee on the Judiciary|Senate Judiciary Committee]]
| term_start3         = January 3, 2025
| term_end3           = 
| predecessor3        = [[Dick Durbin]]
| successor3          =
| term_start4         = January 3, 2015
| term_end4           = January 3, 2019
| predecessor4        = Patrick Leahy
| successor4          = [[Lindsey Graham]]
{{collapsed infobox section begin |last=yes |Past Senate positions
 |titlestyle       = border:1px dashed lightgrey;}}{{Infobox officeholder |embed=yes 
| office5             = [[President pro tempore emeritus of the United States Senate]]
| term_start5         = January 20, 2021
| term_end5           = January 3, 2025
| predecessor5        = Patrick Leahy
| successor5          = Patty Murray
| office7             = Ranking Member of the [[United States Senate Committee on Budget|Senate Budget Committee]]
| term_start7         = January 3, 2023
| term_end7           = January 3, 2025
| predecessor7        = [[Lindsey Graham]]
| successor7          = [[Jeff Merkley]]
| office8             = Ranking Member of the [[International Narcotics Control Caucus|Senate Narcotics Caucus]]
| term_start8         = January 3, 2023
| term_end8           = January 3, 2025
| predecessor8        = [[John Cornyn]]
| successor8          = [[Sheldon Whitehouse]]
| office9             = Ranking Member of the [[United States Senate Committee on the Judiciary|Senate Judiciary Committee]]
| term_start9         = February 3, 2021
| term_end9           = January 3, 2023
| predecessor9        = [[Dianne Feinstein]]
| successor9          = Lindsey Graham
| term_start10         = January 3, 2011
| term_end10           = January 3, 2015
| predecessor10        = [[Jeff Sessions]]
| successor10          = Patrick Leahy
| office11            = Chair of the [[United States Senate Committee on Finance|Senate Finance Committee]]
| term_start11        = January 3, 2019
| term_end11          = February 3, 2021
| predecessor11       = [[Orrin Hatch]]
| successor11         = [[Ron Wyden]]
| term_start12        = January 3, 2003
| term_end12          = January 3, 2007
| predecessor12       = [[Max Baucus]]
| successor12         = Max Baucus
| term_start13        = January 20, 2001
| term_end13          = June 6, 2001
| predecessor13       = Max Baucus
| successor13         = Max Baucus
| office14            = Chair of the [[International Narcotics Control Caucus|Senate Narcotics Caucus]]
| term_start14        = January 3, 2015
| term_end14          = January 3, 2019
| predecessor14       = Dianne Feinstein
| successor14         = [[John Cornyn]]
| office15            = Chair of the [[United States Senate Special Committee on Aging|Senate Aging Committee]]
| term_start15        = January 3, 1997
| term_end15          = January 3, 2001
| predecessor15       = [[William Cohen]]
| successor15         = [[John Breaux]]
{{Collapsed infobox section end}}}}
| jr/sr16             = United States Senator
| state16             = [[Iowa]]
| alongside16         = [[Joni Ernst]]
| term_start16        = January 3, 1981
| term_end16          = 
| predecessor16       = [[John Culver]]<!-- 
| successor16         = -->
| state17             = [[Iowa]]
| district17          = {{ushr|IA|3|3rd}}
| term_start17        = January 3, 1975
| term_end17          = January 3, 1981
| predecessor17       = [[H. R. Gross]]
| successor17         = [[T. Cooper Evans|Cooper Evans]]
| office18            = Member of the [[Iowa House of Representatives]]
| term_start18        = January 12, 1959
| term_end18          = January 3, 1975
| predecessor18       = Wayne Ballhagen
| successor18         = Raymond Lageschulte
| constituency18      = {{ubl |[[Iowa's 73rd House of Representatives district|73rd district]] (1959–1971) |[[Iowa's 10th House of Representatives district|10th district]] (1971–1973) |[[Iowa's 37th House of Representatives district|37th district]] (1973–1975)}}
| birth_name          = Charles Ernest Grassley
| birth_date          = {{birth date and age|1933|9|17}}
| birth_place         = [[New Hartford, Iowa]], U.S.
| death_date          = 
| death_place         = 
| party               = [[Republican Party (United States)|Republican]]
| spouse              = {{marriage|Barbara Speicher|August 22, 1954}}
| children            = 5
| relatives           = [[Pat Grassley]] (grandson)
| education           = [[University of Northern Iowa]] ([[Bachelor of Arts|BA]], [[Master of Arts|MA]])<br>[[University of Iowa]]
| signature           = ChuckGrassleySig-01-01.svg
| website             = {{URL|grassley.senate.gov|Senate website}}<br>{{URL|grassleyworks.com|Campaign website}}
|module      = {{Listen
|pos         = center
|embed       = yes
|filename    = Sen. Chuck Grassley In Support of John Roberts to be Chief Justice.ogg
|title       = Grassley's voice
|type        = speech
|description = Grassley supporting [[John Roberts]] for [[Chief Justice of the United States]].<br>Recorded September 28, 2005}}
}}
{{stack end}}
'''Charles Ernest Grassley''' (born September 17, 1933) is an American politician serving since 2025 as [[president pro tempore of the United States Senate]], a position he also held from 2019 to 2021. A member of the [[Republican Party (United States)|Republican Party]], Grassley is the [[Seniority in the United States Senate|senior]] [[United States Senate|U.S. senator]] from [[Iowa]], serving since 1981. Since 2023, he has been the 45th [[dean of the United States Senate]].

Before becoming a senator, Grassley served eight terms in the [[Iowa House of Representatives]] (1959–1975) and three terms in the [[United States House of Representatives]] (1975–1981). He served three stints as [[United States Senate Committee on Finance|Senate Finance Committee chairman]] during periods of Republican Senate majority.<ref>{{cite web |last1=Breuninger |first1=Kevin |title=Sen. Chuck Grassley opts for Finance Committee chairman, setting up Sen. Lindsey Graham to lead Judiciary Committee |url=https://www.cnbc.com/2018/11/16/grassley-opts-for-finance-chair-graham-poised-to-lead-judiciary-committee.html |website=[[CNBC]] |date=November 16, 2018|access-date=November 17, 2018 |archive-date=November 18, 2018 |archive-url=https://web.archive.org/web/20181118081432/https://www.cnbc.com/2018/11/16/grassley-opts-for-finance-chair-graham-poised-to-lead-judiciary-committee.html |url-status=live }}</ref><ref>{{cite news |last1=Bolton |first1=Alexander |title=Trump set to have close ally Graham in powerful chairmanship |url=https://thehill.com/homenews/senate/417216-trump-set-to-have-close-ally-graham-in-powerful-chairmanship/ |website=[[The Hill (newspaper)|The Hill]] |date=November 16, 2016|access-date=November 17, 2018 |archive-date=November 17, 2018 |archive-url=https://web.archive.org/web/20181117211844/https://thehill.com/homenews/senate/417216-trump-set-to-have-close-ally-graham-in-powerful-chairmanship |url-status=live }}</ref> Upon the retirement of [[Orrin Hatch]] on January 3, 2019, Grassley became the Senate's most senior Republican and its [[president pro tempore of the United States Senate|president pro tempore]].<ref>{{cite web|url=https://www.kcrg.com/content/news/Grassley-set-to-become-Senate-Pro-Tempore-500500491.html|title=Grassley set to become Senate pro tempore|first=Ellyn|last=Felton|website=KCRG-TV9|date=November 14, 2018 |access-date=January 25, 2019|archive-date=February 3, 2019|archive-url=https://web.archive.org/web/20190203091004/https://www.kcrg.com/content/news/Grassley-set-to-become-Senate-Pro-Tempore-500500491.html|url-status=live}}</ref><ref>{{cite web|url=https://www.kimt.com/content/news/Chuck-Grassley-to-be-third-in-line-for-the-Presidency-500507472.html|title=Chuck Grassley to be third in line for the Presidency|first=Mike|last=Bunge|website=KIMT News|access-date=January 25, 2019|archive-date=November 15, 2018|archive-url=https://web.archive.org/web/20181115030810/https://www.kimt.com/content/news/Chuck-Grassley-to-be-third-in-line-for-the-Presidency-500507472.html|url-status=live}}</ref> Upon [[Patrick Leahy]]'s retirement in January 2023, Grassley became the [[Dean of the United States Senate|most senior member of the Senate]].

At {{Age in years, months and days|year=1933|month=9|day=17}} old, Grassley is the [[List of current United States senators#List of senators|oldest sitting United States senator]], the longest-serving Republican in congressional history, and the [[List of members of the United States Congress by longevity of service|sixth-longest-serving U.S. senator in history]]. He served as [[president pro tempore emeritus of the United States Senate|president pro tempore emeritus of the Senate]] from 2021 to 2025. During his four decades in the Senate, Grassley has chaired the [[United States Senate Committee on Finance|Finance Committee]], the [[United States Senate Caucus on International Narcotics Control|Narcotics Control Caucus]], the [[United States Senate Committee on the Judiciary|Judiciary Committee]], and the [[United States Senate Special Committee on Aging|Aging Committee]].

== Early life and education ==
[[File:Chuck Grassley 1979 congressional photo.jpg|thumb|left|200px|Grassley in 1979]]
Grassley was born on September 17, 1933 in [[New Hartford, Iowa]].<ref name="bioguide" /> He is the son of Ruth (née Corwin) and Louis Arthur Grassley.<ref name= "AG2024">{{cite web|last=Prater|first=Lisa|url=https://www.agriculture.com/senator-charles-grassley-reflects-on-careers-in-farming-government-8640807|title=Senator Charles Grassley Reflects on Careers in Farming, Government|publisher= Agriculture.com |date= April 30, 2024|access-date=August 17, 2025}}</ref> He was the third of five children, having 2 brothers and 2 sisters.

In August 1920, Ruth Grassley was among the first four women to vote in Iowa.<ref name= "AG2024"/> Her son did not know about this until many years after her death, when a constituent showed him an article about it.<ref name= "AG2024"/> The women had voted in a school election.<ref name= "AG2024"/> In 2019, he gave a speech describing her achievement.<ref>{{cite web|url=https://www.grassley.senate.gov/news/video/watch/grassley-recalls-story-of-his-mother-being-among-first-to-vote-after-19th-amendment-ratified|title=Grassley Recalls Story of His Mother Being Among First to Vote After 19th Amendment Ratified|publisher= Grassley.senate.gov |date= June 4, 2019|access-date=August 17, 2025}}</ref>

Grassley was raised on a farm;<ref>{{cite news|url=https://www.usnews.com/news/articles/2009/09/09/10-things-you-didnt-know-about-chuck-grassley|title=10 Things You Didn't Know About Chuck Grassley |website=usnews.com |date=September 9, 2009|last=Bell|first=Debra}}</ref> his childhood home did not have electricity or indoor plumbing.<ref name="unflattering" />

Grassley graduated from New Hartford Community High School in 1951.<ref name="IAlegis00" /><ref>{{cite web|url=https://scua.library.uni.edu/university-archives/biographies/charles-e-grassley |title=Charles E. Grassley |website=scua.library.uni.edu |access-date=December 25, 2023}}</ref> At [[University of Northern Iowa|Iowa State Teachers College]] (now the University of Northern Iowa), he earned a Bachelor of Arts in 1955 and a Master of Arts in [[political science]] in 1956. He pursued a Ph.D. in political science at the [[University of Iowa]], but did not complete the degree.<ref name="bioguide" /><ref name="unflattering">{{Cite magazine|url=https://www.vanityfair.com/news/2022/06/chuck-grassley-last-act|title=Chuck Grassley's Last Act|last=Lenz|first=Lyz|date=June 16, 2022|magazine=Vanity Fair}}</ref><ref>{{Cite web|url=https://www.desmoinesregister.com/story/news/politics/elections/2022/09/29/iowa-senate-race-2022-chuck-grassley-mike-franken-election-abortion-inflation/10389258002/|title=See what Chuck Grassley, Mike Franken say about abortion and inflation in Iowa's U.S. Senate race|website=The Des Moines Register|date=September 29, 2022}}</ref> During his time as a student, Grassley joined the social-professional [[Alpha Gamma Rho]] fraternity.<ref>{{cite web|title=Greeks in the 113th Congress |url=http://www.nicindy.org/blog/greeks-in-the-113th-congress/ |publisher=North-American Interfraternity Conference |access-date=September 2, 2013 |url-status = dead|archive-url=https://web.archive.org/web/20140327052229/http://www.nicindy.org/blog/greeks-in-the-113th-congress/ |archive-date=March 27, 2014}}</ref>

In 1955, Grassley's brother Louis Grassley Jr. died as a result of a traffic accident in [[New Hartford, Iowa|New Hartford]].<ref>{{cite web|url=https://www.newspapers.com/article/the-courier-car-accident/179078625/|title=New Hartford Crash Victim Rites Tuesday|publisher= [[The Waterloo-Cedar Falls Courier|The Courier]]|date= August 8, 1955|access-date=August 17, 2025}}</ref> In 2014, Chuck became the last Grassley sibling alive when his sister Genevieve died.<ref>{{cite web|url=https://www.newspapers.com/article/the-courier-sister/179156634/|title= Genevieve "Bunny" Grassley Wiegmann|date=February 4, 2014|publisher=[[The Waterloo-Cedar Falls Courier|The Courier]]|access-date=August 18, 2025}}</ref> His brother Kenneth died in 2001<ref>{{cite web|url=https://www.newspapers.com/article/the-courier-brother/179156638/|title= Sen. Grassley's brother dies|date=December 25, 2001|publisher=[[The Waterloo-Cedar Falls Courier|The Courier]]|access-date=August 18, 2025}}</ref> and his sister Lois in 2006.<ref>{{cite web|url=https://www.newspapers.com/article/the-courier-sister/179156791/|title= Lois E. West|date=October 2, 2006|publisher=[[The Waterloo-Cedar Falls Courier|The Courier]]|access-date=August 18, 2025}}</ref>

== Early career ==
In the 1950s, Grassley farmed and worked in factories in Iowa, first as a [[sheet metal]] shearer and then as an [[assembly line]] worker. From 1967 to 1968, he taught at [[Charles City College]].<ref name="IAlegis00" />

Grassley represented parts of [[Butler County, Iowa|Butler County]] in the [[Iowa House of Representatives]] from 1959 to 1975.<ref name=IAlegis00>{{cite web |url=https://www.legis.iowa.gov/legislators/legislator/legislatorAllYears?personID=253|title=Charles Grassley |access-date=August 18, 2025 |work= Iowa State Legislature}}</ref> He then served in the [[United States House of Representatives]] from 1975 to 1981.<ref name="bioguide">{{cite web|title=GRASSLEY, Charles Ernest|url=http://bioguide.congress.gov/scripts/biodisplay.pl?index=G000386|publisher=[[Biographical Directory of the United States Congress]]|access-date=August 18, 2025}}</ref>

== U.S. Senate ==

=== Tenure ===
==== 1981–1989 ====
[[File:Reagan Contact Sheet C4794 (cropped).jpg|thumb|left|Grassley with [[President of the United States|President]] [[Ronald Reagan]] in 1981]]

In November 1981, Grassley was one of 32 senators to sign a letter to President Reagan supporting Director of the [[Office of Management and Budget]] [[David Stockman]].<ref>{{cite news|url=https://www.nytimes.com/1981/11/14/us/32-gop-senators-praise-stockman-others-skeptical.html|title=32 G.O.P. SENATORS PRAISE STOCKMAN; OTHERS SKEPTICAL|author=Tolchin, Martin|work=[[The New York Times]]|date=November 14, 1981|access-date=July 26, 2018|archive-date=July 26, 2018|archive-url=https://web.archive.org/web/20180726203309/https://www.nytimes.com/1981/11/14/us/32-gop-senators-praise-stockman-others-skeptical.html|url-status=live}}</ref> In August 1982, while the Reagan administration tried persuading senators to approve legislation authorizing the creation of a radio station for broadcasting to Cuba, Grassley joined fellow Iowa senator [[Roger Jepsen]] and [[Edward Zorinsky]] in seeking an amendment to the bill barring the Reagan administration from operating Radio Marti on that frequency or other commercial AM frequencies.<ref>{{cite news|url=https://www.nytimes.com/1982/08/20/world/quarrel-in-senate-over-radio-marti.html|title=QUARREL IN SENATE OVER RADIO MARTI|first=Judith|last=Miller|date=August 20, 1982|work=[[The New York Times]]|access-date=August 13, 2018|archive-date=August 13, 2018|archive-url=https://web.archive.org/web/20180813124339/https://www.nytimes.com/1982/08/20/world/quarrel-in-senate-over-radio-marti.html|url-status=live}}</ref>

In October 1983, Grassley voted against establishing a legal holiday to commemorate [[Martin Luther King Jr.]]'s birthday.<ref>{{cite news |title=SENATE'S ROLL-CALL VOTE ON KING HOLIDAY |url=https://www.nytimes.com/1983/10/20/us/senate-s-roll-call-vote-on-king-holiday.html |access-date=January 24, 2019 |work=[[The New York Times]] |date=October 20, 1983 |archive-date=January 14, 2019 |archive-url=https://web.archive.org/web/20190114084211/https://www.nytimes.com/1983/10/20/us/senate-s-roll-call-vote-on-king-holiday.html |url-status=live }}</ref> In 2015, an aide to Grassley said that he voted against the holiday due to an "economic decision both in the cost to the broader economy in lost productivity, and the cost to the taxpayers with the federal government closed".<ref>{{Cite web|last1=Kamisar|first1=Ben|title=Lawmakers reflect on MLK Day 'no' votes|url=https://thehill.com/homenews/229844-lawmakers-reflect-on-no-votes-on-mlk-day/|newspaper=[[The Hill (newspaper)|The Hill]]|quote=Grassley aide: "Senator Grassley’s vote against an MLK Day holiday was purely an economic decision both in the cost to the broader economy in lost productivity, and the cost to the taxpayers with the federal government closed"|date=January 18, 2015|access-date=December 22, 2019|archive-date=December 22, 2019|archive-url=https://web.archive.org/web/20191222203623/https://thehill.com/homenews/229844-lawmakers-reflect-on-no-votes-on-mlk-day|url-status=live}}</ref> In 2004, Grassley co-sponsored legislation giving King a posthumous award, which became law on October 25 that year.<ref>{{Cite web|title=S.1368 - A bill to authorize the President to award a gold medal on behalf of the Congress to Reverend Doctor Martin Luther King, Jr. (posthumously) and his widow Coretta Scott King in recognition of their contributions to the Nation on behalf of the civil rights movement.|url=https://www.congress.gov/bill/108th-congress/senate-bill/1368/cosponsors%20?searchResultViewType=expanded|website=congress.gov|year=2003–2004|access-date=December 22, 2019|archive-date=July 28, 2020|archive-url=https://web.archive.org/web/20200728143202/https://www.congress.gov/bill/108th-congress/senate-bill/1368/cosponsors%20?searchResultViewType=expanded|url-status=live}}</ref><ref>{{Cite web|title=Some evolved on MLK honor|url=https://www.newsday.com/opinion/editorial/mlk-jr-day-history-1.26111828|newspaper=[[Newsday]]|date=January 20, 2019|access-date=December 22, 2019|archive-date=December 22, 2019|archive-url=https://web.archive.org/web/20191222203625/https://www.newsday.com/opinion/editorial/mlk-jr-day-history-1.26111828|url-status=live}}</ref>

On November 1, 1984, Grassley signed a one-page citation of contempt of Congress against Attorney General [[William French Smith]] due to Smith's not turning over files on an investigation into Navy shipbuilding. Assistant Attorney General [[Stephen S. Trott]] called the citation "out of place" since Grassley was not acting at a session of the Judiciary panel he led.<ref>{{cite news|url=https://www.nytimes.com/1984/11/01/business/contempt-citation-in-dynamics-case.html|title=Contempt Citation in Dynamics Case|author=Biddle, Wayne|date=November 1, 1984|work=[[The New York Times]]|access-date=July 26, 2018|archive-date=July 26, 2018|archive-url=https://web.archive.org/web/20180726201935/https://www.nytimes.com/1984/11/01/business/contempt-citation-in-dynamics-case.html|url-status=live}}</ref>

In May 1987, the [[Senate Appropriations Committee]] defeated an attempt by Grassley to hasten payments of corn and other feed grain subsidies ahead of the scheduled payment taking place after October 1. Grassley's measure was also designed to unravel an accounting device lawmakers had used to make it appear that they were reducing spending for the incoming fiscal year.<ref>{{cite news|url=https://www.upi.com/Archives/1987/05/01/Government-suspends-farm-price-support-payments/4468546840000/?tt=6|title=Government suspends farm price support payments|date=May 1, 1987|publisher=UPI|access-date=August 12, 2018|archive-date=August 13, 2018|archive-url=https://web.archive.org/web/20180813004256/https://www.upi.com/Archives/1987/05/01/Government-suspends-farm-price-support-payments/4468546840000/?tt=6|url-status=live}}</ref>

In October 1987, during a press briefing, Grassley accused Reagan of being "asleep at the switch" and botching the handling of [[Robert Bork Supreme Court nomination|Robert Bork's Supreme Court nomination]], adding that Bork's nomination had convinced him that the Reagan administration "has been terribly lucky for the last seven years" in other matters, including the economy and foreign policy.<ref>{{cite news|url=https://www.upi.com/Archives/1987/10/08/Sen-Charles-Grassley-R-Iowa-a-leading-conservative-supporter-of/2021560664000/|title=Sen. Charles Grassley, R-Iowa, a leading conservative supporter of...|date=October 8, 1987|publisher=UPI|access-date=August 12, 2018|archive-date=August 13, 2018|archive-url=https://web.archive.org/web/20180813005031/https://www.upi.com/Archives/1987/10/08/Sen-Charles-Grassley-R-Iowa-a-leading-conservative-supporter-of/2021560664000/|url-status=live}}</ref> Later that month, Grassley likened the groups lobbying against Bork's nomination to the [[McCarthyism]] of the 1950s: "The big lie is standard operating procedure for some of these groups. All you have to do is repeat the same outrageous charges, and repeat them so often that people believe they are true."<ref>{{cite news|url=https://www.upi.com/Archives/1987/10/22/Supporters-of-Robert-Borks-Supreme-Court-nomination-renewed-their/3131561873600/|title=Supporters of Robert Bork's Supreme Court nomination renewed their...|date=October 22, 1987|publisher=UPI|access-date=August 12, 2018|archive-date=August 13, 2018|archive-url=https://web.archive.org/web/20180813005324/https://www.upi.com/Archives/1987/10/22/Supporters-of-Robert-Borks-Supreme-Court-nomination-renewed-their/3131561873600/|url-status=live}}</ref> In November, as party leaders of the Senate Judiciary Committee met on the Supreme Court nomination of [[Douglas H. Ginsburg]], Grassley released the text of a letter he intended to send to the [[American Bar Association]] suggesting the association was dragging its feet in reviewing Ginsburg's record.<ref>{{cite news|url=https://www.latimes.com/archives/la-xpm-1987-11-05-mn-18882-story.html|title=Senate Panel Refuses to Rush Hearings on Ginsburg|first=David|last=Lauter|date=November 5, 1987|work=[[Los Angeles Times]]|access-date=December 12, 2019|archive-date=October 17, 2015|archive-url=https://web.archive.org/web/20151017040440/http://articles.latimes.com/1987-11-05/news/mn-18882_1_senate-panel|url-status=live}}</ref> After Ginsburg admitted having smoked marijuana, Grassley said, "You like to think people who are appointed to the Supreme Court respect the law."<ref>{{cite news|url=https://www.latimes.com/archives/la-xpm-1987-11-06-mn-12868-story.html|title=Ginsburg Admits Smoking Marijuana in '60s and '70s|first1=David|last1=Lauter|first2=Melissa|last2=Healy|date=November 6, 1987|work=[[Los Angeles Times]]|access-date=December 12, 2019|archive-date=October 26, 2015|archive-url=https://web.archive.org/web/20151026180008/http://articles.latimes.com/1987-11-06/news/mn-12868_1_judge-ginsburg|url-status=live}}</ref> Grassley joined [[Jesse Helms]] in resisting the nomination of [[Anthony Kennedy]], Reagan's next choice for the Supreme Court; he indicated that he would have preferred that Reagan instead nominate Judge [[Pasco Bowman II]] or Judge [[John Clifford Wallace]].{{efn|Immediately following Bork's rejection Democrats on the Senate Judiciary Committee emphatically declared both Bowman and Wallace unacceptable.<ref name="High">Epstein, Aaron; "3 High Court Hopefuls Deemed OK"; ''[[The Miami Herald]]'', October 28, 1987, p. 16.</ref> [[list of United States senators from Vermont|Vermont's]] [[Patrick Leahy]] added that if any candidate unacceptable to the Democratic Senate majority were nominated, Senate Democrats would refuse to hold hearings on that nominee and keep the seat open until after [[1988 United States presidential election|the 1988 presidential election]].<ref>Yalof, David Alistair; ''Pursuit of Justices: Presidential Politics and the Selection of Supreme Court Nominees'', p. 164. {{ISBN|9780226945460}}.</ref>}} Grassley expressed distaste for "the people who are committed to changing the judiciary" and taking "the path of least resistance".<ref>{{cite news|url=https://www.upi.com/Archives/1987/11/10/President-Reagan-nominates-Judge-Anthony-Kennedy-to-Supreme-Court/1605563518800/|title=President Reagan nominates Judge Anthony Kennedy to Supreme Court|first=Helen|last=Thomas|date=November 10, 1987|publisher=UPI|access-date=August 12, 2018|archive-date=August 13, 2018|archive-url=https://web.archive.org/web/20180813043303/https://www.upi.com/Archives/1987/11/10/President-Reagan-nominates-Judge-Anthony-Kennedy-to-Supreme-Court/1605563518800/|url-status=live}}</ref>

In January 1989, as the Senate voted to schedule a vote within a month on a pay increase, Grassley asked how senators would decline federal program increases "come March and April if the first thing out of the box is a pay raise".<ref>{{cite news|url=https://www.nytimes.com/1989/01/05/us/senate-leaders-reacting-to-criticism-agree-to-vote-on-rejecting-a-raise.html|title=Senate Leaders, Reacting to Criticism, Agree to Vote on Rejecting a Raise|author=Rasky, Susan F.|date=January 5, 1989|work=[[The New York Times]]|access-date=August 12, 2018|archive-date=August 13, 2018|archive-url=https://web.archive.org/web/20180813103349/https://www.nytimes.com/1989/01/05/us/senate-leaders-reacting-to-criticism-agree-to-vote-on-rejecting-a-raise.html|url-status=live}}</ref> In February, he was one of six senators to testify against the 50% pay increase scheduled to take effect the next week.<ref>{{cite news|url=https://www.nytimes.com/1989/02/02/us/tempers-and-patience-short-in-pay-conscious-congress.html|title=Tempers and Patience Short In Pay-Conscious Congress|author=Oreskes, Michael|date=February 2, 1989|work=[[The New York Times]]|access-date=August 12, 2018|archive-date=August 13, 2018|archive-url=https://web.archive.org/web/20180813043315/https://www.nytimes.com/1989/02/02/us/tempers-and-patience-short-in-pay-conscious-congress.html|url-status=live}}</ref> In October, he was one of nine senators to vote against legislation intended to outlaw flag burning and other forms of flag defacement and joined [[Bob Dole]] and [[Orrin Hatch]], the other two Republicans to vote against the bill, in voicing a preference for a constitutional amendment.<ref>{{cite news|url=https://www.nytimes.com/1989/10/06/us/flag-burning-ban-is-voted-by-senate.html|title=Flag-burning Ban is Voted by Senate|date=October 6, 1989|author=Toner, Robin|work=[[The New York Times]]|access-date=August 12, 2018|archive-date=August 13, 2018|archive-url=https://web.archive.org/web/20180813005034/https://www.nytimes.com/1989/10/06/us/flag-burning-ban-is-voted-by-senate.html|url-status=live}}</ref>

==== 1990–1999 ====
[[File:MAXWH.jpg|thumb|Senators Grassley and [[Max Baucus]] (D-MT), and Representative [[Clay Shaw (politician)|Clay Shaw]] (R-FL) (left to right) address the media after a meeting at the [[White House]] with President [[Bill Clinton]]]]
In January 1991, Grassley was one of only two Republican senators to vote against [[Gulf War|joining the international coalition to force Iraq out of Kuwait]], the other being [[Mark Hatfield]] of [[Oregon]].<ref>{{cite web|url=https://www.govtrack.us/congress/votes/102-1991/s2|title=S.J.Res. 2 (102nd): Authorization for Use of Military Force Against Iraq Resolution|work=govtrack.us|access-date=September 18, 2020|archive-date=September 5, 2020|archive-url=https://web.archive.org/web/20200905124919/https://www.govtrack.us/congress/votes/102-1991/s2|url-status=live}}</ref> In August 1991, he became one of six Republicans on the Select Senate Committee on POW-MIA Affairs that would investigate the number of Americans still missing in the aftermath of the [[Vietnam War]] following renewed interest.<ref>{{cite news|url=https://www.upi.com/Archives/1991/08/02/Senate-creates-POW-MIA-panel/7728681105600/|title=Senate creates POW-MIA panel|date=August 2, 1991|publisher=UPI|access-date=December 16, 2018|archive-date=December 17, 2018|archive-url=https://web.archive.org/web/20181217014715/https://www.upi.com/Archives/1991/08/02/Senate-creates-POW-MIA-panel/7728681105600/|url-status=live}}</ref> In July 1998, President [[Bill Clinton]] listed Grassley among the members of Congress who had made it possible "for me to sign into law today the [[Internal Revenue Service Restructuring and Reform Act of 1998|Internal Revenue Service Restructuring and Reform Act]]".<ref>{{Cite web |url=https://www.gpo.gov/fdsys/pkg/PPP-1998-book2/html/PPP-1998-book2-doc-pg1297.htm |title=Remarks on Signing the Internal Revenue Service Restructuring and Reform Act of 1998 |last=Clinton |first=Bill |author-link=Bill Clinton |date=July 22, 1998 |publisher=Public Papers of the Presidents of the United States |archive-url=https://web.archive.org/web/20180529055535/https://www.gpo.gov/fdsys/pkg/PPP-1998-book2/html/PPP-1998-book2-doc-pg1297.htm |archive-date=May 29, 2018 |url-status = dead|quote=And in particular, let me thank Senator Kerrey and Congressman Portman, Senator Roth, Senator Moynihan, Senator Grassley, Congressman Archer, Congressman Rangel, Congressman Cardin for their leading work that makes it possible for me to sign into law today the Internal Revenue Service Restructuring and Reform Act.}}</ref> On February 12, 1999, Grassley was one of 50 senators to vote to [[Impeachment trial of Bill Clinton|convict and remove Bill Clinton from office]].<ref>{{cite news|title=Roll Call of Votes on Articles of Impeachment|url=https://archive.nytimes.com/www.nytimes.com/library/politics/021399ap-rollcall-vote.html|newspaper=[[The New York Times]]|agency=[[Associated Press]]|date=February 12, 1999|access-date=December 29, 2019|archive-date=January 6, 2020|archive-url=https://web.archive.org/web/20200106164903/https://archive.nytimes.com/www.nytimes.com/library/politics/021399ap-rollcall-vote.html|url-status=live}}</ref>

==== 2000–2009 ====
[[File:President George W. Bush and Vice President Dick Cheney Attend a Meeting with Senator Charles Grassley in the Oval Office (02).jpg|thumb|Grassley meets with President [[George W. Bush]] and Vice President [[Dick Cheney]] in 2001]]
In May 2001, Grassley met with Democratic senator [[Max Baucus]] over the allocation of finances in tax cuts and both reported they were making progress in reaching a bipartisan deal, Grassley adding that the bill would contain all four of the main elements proposed by the Bush administration and the Senate Finance Committee would modify the components of the Bush proposal.<ref>{{cite news|url=https://www.nytimes.com/2001/05/09/us/panel-reaches-deal-on-budget-framework.html|title=Panel Reaches Deal on Budget Framework|date=May 9, 2001|first1=Richard W.|last1=Stevenson|first2=David E.|last2=Rosenbaum|work=[[The New York Times]]|access-date=July 26, 2018|archive-date=February 13, 2020|archive-url=https://web.archive.org/web/20200213180502/https://www.nytimes.com/2001/05/09/us/panel-reaches-deal-on-budget-framework.html|url-status=live}}</ref>

In August 2002, Grassley sent a letter to president and chief executive of the [[United Way of America]] Brian Gallagher requesting a detailed explanation on the overseeing of both finances and management of the organization's affiliates. Grassley also wrote to chief executive of the United Way of the National Capital Area Norman O. Taylor in regards to allegations of affiliates misappropriating money as well as withholding information the board needed to allow its conducting of oversight.<ref>{{cite news|url=https://www.nytimes.com/2002/08/22/us/senator-questions-finances-of-united-way.html|title=Senator Questions Finances of United Way|first=Stephanie|last=Storm|date=August 22, 2002|work=[[The New York Times]]|access-date=July 26, 2018|archive-date=July 26, 2018|archive-url=https://web.archive.org/web/20180726201743/https://www.nytimes.com/2002/08/22/us/senator-questions-finances-of-united-way.html|url-status=live}}</ref>

As a senior member of the Senate Finance Committee, Grassley has spearheaded many probes into alleged misuse and lack of accountability of federal money. In July 2007, a Grassley-commissioned report was released claiming that more than US$1 billion in [[agricultural subsidy|farm subsidies]] were sent to deceased individuals.<ref>{{cite news | url = http://seattletimes.nwsource.com/html/nationworld/2003803149_watch24.html | title = Dead farmers got subsidies | work = [[The Seattle Times]] | date = July 24, 2007 | access-date = July 24, 2007 |url-status = live| archive-url = https://web.archive.org/web/20070929143432/http://seattletimes.nwsource.com/html/nationworld/2003803149_watch24.html | archive-date = September 29, 2007 | df = mdy-all }}</ref> Grassley was called a "Taxpayer Super Hero" in 2014 by the council for [[Citizens Against Government Waste]]. He received a 100 percent rating from the group that year and has a lifetime rating of 78 percent.<ref>{{cite news | url = http://www.marketwatch.com/story/ccagw-honors-sen-chuck-grassley-for-being-a-taxpayer-super-hero-2015-07-30 | title = CCAGW Honors Sen. Chuck Grassley for Being a "Taxpayer Super Hero" | work = [[MarketWatch]] | date = July 30, 2015 | access-date = September 27, 2015 |url-status = live| archive-url = https://web.archive.org/web/20150928232619/http://www.marketwatch.com/story/ccagw-honors-sen-chuck-grassley-for-being-a-taxpayer-super-hero-2015-07-30 | archive-date = September 28, 2015 | df = mdy-all }}</ref> Grassley was ranked the 5th most bipartisan senator of the [[114th United States Congress]] and the 7th most bipartisan Senator in the first session of the [[115th United States Congress|115th Congress]] by the Bipartisan Index, a metric created by [[the Lugar Center]] for [[Richard Lugar#The Lugar Center|the Lugar Center]] and [[Georgetown University|Georgetown's]] [[McCourt School of Public Policy]] to rank members of the United States Congress by their degree of bipartisanship.<ref>{{Citation|url=http://www.thelugarcenter.org/assets/htmldocuments/The%20Lugar%20Center%20-%20McCourt%20School%20Bipartisan%20Index%20114th%20Congress%20House%20Scores.pdf|title=The Lugar Center - McCourt School Bipartisan Index|publisher=[[Richard Lugar#The Lugar Center|The Lugar Center]]|date=March 7, 2016|access-date=April 30, 2017|url-status = live|archive-url=https://web.archive.org/web/20170621172910/http://www.thelugarcenter.org/assets/htmldocuments/The%20Lugar%20Center%20-%20McCourt%20School%20Bipartisan%20Index%20114th%20Congress%20House%20Scores.pdf|archive-date=June 21, 2017}}</ref><ref>{{cite news|url=http://www.thelugarcenter.org/assets/htmldocuments/Senate%20Scores%20115th%20Congress%20First%20Session.pdf|publisher=The Lugar Center|title=The Lugar Center - McCourt School Bipartisan Index|date=April 24, 2018|access-date=July 2, 2018|location=Washington, D.C.|archive-date=July 2, 2018|archive-url=https://web.archive.org/web/20180702180136/http://www.thelugarcenter.org/assets/htmldocuments/Senate%20Scores%20115th%20Congress%20First%20Session.pdf|url-status=live}}</ref>

In February 2004, Grassley released an internal report composed by the FBI in 2000 that examined 107 instances of either serious or criminal misconduct by its agents over a 16-year period. In a letter to the FBI, Grassley called the report "a laundry list of horrors with examples of agents who committed rape, sexual crimes against children, other sexual deviance and misconduct, attempted murder of a spouse, and narcotics violations, among many others" and added that the report's findings raised questions about whether the FBI handled agents "soon enough and rigorously enough".<ref>{{cite news|url=https://www.nytimes.com/2004/02/19/us/senator-says-report-chronicling-misconduct-by-fbi-agents-is-a-list-of-horrors.html|title=Senator Says Report Chronicling Misconduct by F.B.I. Agents Is a 'List of Horrors'|date=February 19, 2004|work=[[The New York Times]]|first=Eric|last=Lichtblau|access-date=July 26, 2018|archive-date=July 26, 2018|archive-url=https://web.archive.org/web/20180726201806/https://www.nytimes.com/2004/02/19/us/senator-says-report-chronicling-misconduct-by-fbi-agents-is-a-list-of-horrors.html|url-status=live}}</ref>

On June 28, 2006, Grassley proposed legislation intended to curb [[sex trafficking]] and [[sexual slavery]] by strictly enforcing tax laws, for example by requiring that a [[Form W-2]] be filed for sex workers managed by a [[pimp]] or other employer.<ref>{{cite news|url=http://www.cnn.com/2006/POLITICS/06/27/pimp.tax/|title=Senator seeks tax on pimps, prostitutes|first=Jonathan|last=Schienberg|date=June 28, 2006|access-date=August 17, 2006|work=[[CNN]]|url-status = live|archive-url=https://web.archive.org/web/20060821101655/http://www.cnn.com/2006/POLITICS/06/27/pimp.tax/|archive-date=August 21, 2006}}</ref><ref>{{cite web|url=https://grassley.senate.gov/index.cfm?FuseAction=PressReleases.Detail&PressRelease_id=5114|access-date=August 17, 2006|title=Grassley Press Release on the "Pimp Tax"|url-status = dead|archive-url=https://web.archive.org/web/20060628222544/http://grassley.senate.gov/index.cfm?FuseAction=PressReleases.Detail&PressRelease_id=5114|archive-date=June 28, 2006}}</ref>

Since 1976, Grassley has repeatedly introduced measures that increase the level of [[Taxation in the United States|taxation]] on American citizens living abroad, including retroactive tax hikes. Grassley was eventually able to attach an amendment to a piece of legislation that went into effect in 2006, which increased taxes on Americans abroad by targeting housing and living incentives paid by foreign employers and held them accountable for federal taxes, even though they did not currently reside in the United States. Critics of the amendment felt that the move hurt Americans competing for jobs abroad by putting an unnecessary tax burden on foreign employers. Others felt that the move was only to offset the revenue deficit caused by [[Bush tax cuts|domestic tax cuts]] of the [[Presidency of George W. Bush|Bush Administration]].<ref>{{cite news | url = https://www.nytimes.com/2006/05/30/business/30tax.html | work = [[The New York Times]]| title = Americans Living Abroad Get a Nasty Tax Surprise | first1 = Keith | last1 = Bradsher | date = May 30, 2006 | access-date = April 30, 2010 |url-status = live| archive-url = https://web.archive.org/web/20110512165003/http://www.nytimes.com/2006/05/30/business/30tax.html | archive-date = May 12, 2011 | df = mdy-all }}</ref><ref>{{cite news | url = http://www.iht.com/articles/2006/05/12/news/expats.php | title = Americans abroad face higher United States tax bills | work = [[International Herald Tribune]] | first = Dan | last = Bilefsky | date = May 12, 2006 | archive-url = https://web.archive.org/web/20060619204314/http://www.iht.com/articles/2006/05/12/news/expats.php | archive-date = June 19, 2006}}</ref><ref>[http://www.aca.ch/cadtaxlt.htm Senator Charles Grassley’s Letter of October 3rd 2007 in the Wall Street Journal Provokes Vivid Response.] {{webarchive|url=https://web.archive.org/web/20090201150031/http://www.aca.ch/cadtaxlt.htm |date=February 1, 2009 }}</ref>

In March 2009, amid a scandal that involved [[American International Group|AIG]] executives receiving large salary bonuses from the taxpayer-funded bailout of AIG, Grassley suggested that those AIG employees receiving large bonuses should follow the so-called 'Japanese example', resign immediately or commit [[Seppuku|suicide]]. After some criticism, he dismissed the comments as rhetoric.<ref>{{cite news|url=https://www.nbcnews.com/id/wbna29733519|title=Pressure grows on AIG to return bonuses|website=[[NBC News]]|agency=[[Associated Press]]|date=March 18, 2009|access-date=November 22, 2019|archive-date=September 23, 2020|archive-url=https://web.archive.org/web/20200923224916/http://www.nbcnews.com/id/29733519|url-status=live}}</ref><ref>{{cite web|url=http://firstread.msnbc.msn.com/archive/2009/03/17/1839673.aspx|title=Grassley dismisses suicide talk as rhetoric|website=[[MSNBC]]|first=Domenico|last=Montanaro|date=March 17, 2009|url-status = dead|archive-url=https://web.archive.org/web/20090320043833/http://firstread.msnbc.msn.com/archive/2009/03/17/1839673.aspx|archive-date=March 20, 2009}}</ref><ref>{{cite news|url=http://thecaucus.blogs.nytimes.com/2009/03/17/grassley-aig-should-take-its-medicine-not-hemlock|title=Grassley: A.I.G. Must Take Its Medicine (Not Hemlock)|work=[[The New York Times]]|first=Kate|last=Phillips|date=March 17, 2009|url-status = live|archive-url=https://web.archive.org/web/20090319151817/http://thecaucus.blogs.nytimes.com/2009/03/17/grassley-aig-should-take-its-medicine-not-hemlock/|archive-date=March 19, 2009}}</ref>

In May 2009, Grassley cosponsored a resolution to amend the [[US Constitution]] to prohibit [[Flag desecration|flag burning]].<ref>{{cite news| last = Hancock | first = Jason | url = http://iowaindependent.com/14889/grassley-cosponsors-flag-burning-amendment | title = Grassley cosponsors flag-burning amendment| newspaper=[[Iowa Independent]]|date = May 8, 2009 | access-date = August 23, 2010 |url-status = dead| archive-url = https://archive.today/20120714090823/http://iowaindependent.com/14889/grassley-cosponsors-flag-burning-amendment | archive-date = July 14, 2012 | df = mdy-all }}</ref>

[[File:Barack Obama talks in the background with Sen. Charles Grassley, 2009.jpg|thumb|Grassley talking in the background with President [[Barack Obama]] at the conclusion of an [[Oval Office]] meeting to discuss [[health care]] reform in June 2009]]
When President [[Barack Obama]] and the Democratic Party proposed a health reform bill featuring mandated health insurance, Grassley opposed the health insurance mandate, saying that it was a deal breaker.<ref>{{cite news |first=Jason|last=Hancock| work = [[Iowa Independent]]| title = Grassleys opposition to individual insurance mandate comes under fire | date = October 8, 2009 | url = http://iowaindependent.com/20702/grassleys-opposition-to-insurance-mandates-comes-under-fire |url-status = dead| archive-url = https://web.archive.org/web/20091011061636/http://iowaindependent.com/20702/grassleys-opposition-to-insurance-mandates-comes-under-fire | archive-date = October 11, 2009 | df = mdy-all }}</ref> In response to an audience question at an August 12, 2009, meeting in Iowa, about the end-of-life counseling provisions in the [[America's Affordable Health Choices Act of 2009|House health care bill]], {{USBill|111|HR|3200}}, Grassley said people were right to fear that the government would "[[pull the plug on grandma]]".<ref>{{cite news | url = https://huffingtonpost.com/2009/08/12/grassley-endorses-death-p_n_257677.html | title = Grassley Endorses "Death Panel" Rumor: "You Have Every Right To Fear" | website= [[Huffington Post]]| first = Sam | last = Stein | date = September 12, 2009 | access-date = August 23, 2010 |url-status = live| archive-url = https://web.archive.org/web/20091216122846/http://www.huffingtonpost.com/2009/08/12/grassley-endorses-death-p_n_257677.html | archive-date = December 16, 2009 | df = mdy-all }}</ref><ref>{{cite web | last = Hancock | first = Jason | url = http://iowaindependent.com/18456/grassley-government-shouldnt-decide-when-to-pull-the-plug-on-grandma | title = Grassley: Government shouldn't 'decide when to pull the plug on grandma' | newspaper= [[Iowa Independent]]| date = August 12, 2009 | access-date = August 23, 2010 |url-status = dead| archive-url = https://archive.today/20120712163722/http://iowaindependent.com/18456/grassley-government-shouldnt-decide-when-to-pull-the-plug-on-grandma | archive-date = July 12, 2012 | df = mdy-all }}</ref><ref>{{cite web | last = Hancock | first = Jason | url = http://iowaindependent.com/18485/grassley-repeats-euthanasia-claim | title = Grassley repeats euthanasia claim | newspaper=[[Iowa Independent]]| date = August 12, 2009 | access-date = August 23, 2010 |url-status = dead| archive-url = https://web.archive.org/web/20090815053807/http://iowaindependent.com/18485/grassley-repeats-euthanasia-claim | archive-date = August 15, 2009 | df = mdy-all }}</ref><ref>{{cite web | url = http://www.nbcnews.com/id/22425001 | title = Sen. Deather | work = [[The Rachel Maddow Show (TV series)|The Rachel Maddow Show]] | publisher = [[NBC News]] | date = August 13, 2009 | access-date = August 23, 2010 | df = mdy-all | archive-date = December 1, 2019 | archive-url = https://web.archive.org/web/20191201235806/http://www.nbcnews.com/id/22425001 | url-status = dead }}</ref> Grassley had previously supported covering end-of-life counseling, having voted for the [[Medicare Prescription Drug, Improvement, and Modernization Act]] of 2003, which stated: "The covered services are: evaluating the beneficiary's need for pain and symptom management, including the individual's need for hospice care; counseling the beneficiary with respect to end-of-life issues and care options, and advising the beneficiary regarding advanced care planning."<ref>{{cite web|url=http://iowaindependent.com/18673/grassley-was-for-death-panels-before-he-was-against-them|title=Grassley was for 'death panels' before he was against them|work=[[The Iowa Independent]]|first=Jason|last=Hancock|date=August 14, 2009|access-date=October 9, 2013|archive-date=December 7, 2013|archive-url=https://web.archive.org/web/20131207195208/http://iowaindependent.com/18673/grassley-was-for-death-panels-before-he-was-against-them|url-status=dead}},</ref> In December 2009, he voted against the [[Patient Protection and Affordable Care Act]] (commonly called Obamacare or the Affordable Care Act). It was later reported that Grassley had notified Obama that he would vote against the Affordable Care Act even had the bill been modified to include all of the proposed modifications Grassley had proposed.<ref>{{Cite news|last=Hulse|first=Carl|date=January 31, 2021|title=Ghosts of 2009 Drive Democrats' Push for Robust Crisis Response|language=en-US|work=[[The New York Times]]|url=https://www.nytimes.com/2021/01/31/us/democrats-agenda-coronavirus-economy.html|access-date=January 31, 2021|issn=0362-4331}}</ref>

==== 2010–2020 ====
In January 2010, Grassley was one of seven Senate Republicans to sign a letter warning the White House about their serious reservations with Director of the Transportation Security Administration nominee [[Erroll Southers]] due to conflicting accounts Southers gave the Senate about his previous tapping of databases for information about his ex-wife's boyfriend in the late 1980s.<ref>{{cite news|url=https://www.latimes.com/archives/la-xpm-2010-jan-07-la-na-souther7-2010jan07-story.html|title=GOP senators voice reservations about TSA nominee Erroll Southers|first=Peter|last=Nicholas|date=January 7, 2010|work=[[The New York Times]]|access-date=December 12, 2019|archive-date=December 10, 2015|archive-url=https://web.archive.org/web/20151210103530/http://articles.latimes.com/2010/jan/07/nation/la-na-souther7-2010jan07|url-status=live}}</ref>

In December 2010, Grassley was one of 26 senators who voted against the ratification of [[New START]],<ref>{{cite web |first=Mark|last=Memmott |url=https://www.npr.org/blogs/thetwo-way/2010/12/22/132262684/senate-ratifies-start |title=Senate Ratifies START |website=[[NPR]]|date=December 22, 2010 |access-date=December 22, 2010 |archive-date=March 31, 2015 |archive-url=https://web.archive.org/web/20150331202810/http://www.npr.org/blogs/thetwo-way/2010/12/22/132262684/senate-ratifies-start |url-status=live }}</ref> a [[nuclear arms]] reduction treaty between the United States and [[Russia|Russian Federation]] obliging both countries to have no more than 1,550 strategic warheads as well as 700 launchers deployed during the next seven years along with providing a continuation of on-site inspections that halted when [[START I]] expired the previous year. It was the first arms treaty with Russia in eight years.<ref>{{cite news|url=https://www.nytimes.com/2010/12/23/world/europe/23treaty.html|title=Senate Passes Arms Control Treaty With Russia, 71-26|first=Peter|last=Baker|work=[[The New York Times]]|date=December 22, 2010|access-date=February 21, 2019|archive-date=December 29, 2016|archive-url=https://web.archive.org/web/20161229151646/http://www.nytimes.com/2010/12/23/world/europe/23treaty.html|url-status=live}}</ref>

In April 2013, Grassley opposed a [[gun control]] amendment authored by senators [[Joe Manchin]] and [[Pat Toomey]], and instead proposed alternative legislation to increase prosecutions of gun violence and increase reporting of mental health data in background checks.<ref name="Ed Tibbetts">{{cite news|url=http://qctimes.com/news/local/government-and-politics/grassley-proposes-alternative-gun-bill/article_c0a8ffce-75f8-546e-9907-960295eea4ba.html|title=Grassley proposes alternative gun bill|work=[[Quad-City Times]]|first=Ed|last=Tibbetts|date=April 17, 2013|url-status = live|archive-url=https://web.archive.org/web/20130421025738/http://qctimes.com/news/local/government-and-politics/grassley-proposes-alternative-gun-bill/article_c0a8ffce-75f8-546e-9907-960295eea4ba.html|archive-date=April 21, 2013}}</ref>

[[File:Roast and Ride (29191413552).jpg|thumb|Senator Grassley in 2016]]
On March 9, 2015, Grassley was one of 47 senators to sign a letter to [[Iran]] led by [[Tom Cotton]] to rebuke the [[Joint Comprehensive Plan of Action]].<ref>{{Cite web|last1=DelReal|first1=Jose|title=Here's a list of the GOP senators who signed the Iran letter|url=https://www.washingtonpost.com/news/post-politics/wp/2015/03/10/heres-a-list-of-the-gop-senators-who-signed-the-iran-letter/|newspaper=[[The Washington Post]]|date=March 10, 2015|access-date=December 29, 2019|archive-date=December 29, 2019|archive-url=https://web.archive.org/web/20191229000300/https://www.washingtonpost.com/news/post-politics/wp/2015/03/10/heres-a-list-of-the-gop-senators-who-signed-the-iran-letter/|url-status=live}}</ref> In June 2015, Grassley introduced legislation to help protect taxpayers from alleged abuses by the [[Internal Revenue Service]]. The legislation was proposed in response to recent events involving alleged inappropriate conduct by employees at the IRS but was opposed by Democrats.<ref>{{cite news|url=http://www.radioiowa.com/2015/06/16/senator-grassley-introducing-bill-to-protect-taxpayers-from-irs|title=Senator Grassley introduces bill to protect taxpayers from IRS|work=RadioIowa|first=Matt|last=Kelley|date=June 16, 2015|url-status = live|archive-url=https://web.archive.org/web/20150928190538/http://www.radioiowa.com/2015/06/16/senator-grassley-introducing-bill-to-protect-taxpayers-from-irs/|archive-date=September 28, 2015}}</ref>{{Anchor|full Grassley}}

Since first taking office in 1981, Grassley has held public meetings in all of Iowa's 99 counties each year, even after losing honorarium payments for them in 1994.<ref>{{cite web|title=Sen. Chuck Grassley (R)|url=http://www.nationaljournal.com/almanac/member/194|website=National Journal Almanac|access-date=August 16, 2014|archive-date=August 19, 2014|archive-url=https://web.archive.org/web/20140819082922/http://www.nationaljournal.com/almanac/member/194|url-status=live}}</ref> This has led to the coinage of the term "full Grassley" to describe a presidential candidate visiting all 99 counties of Iowa before the [[Iowa caucuses]].<ref name="full grassley">{{cite web|last1=Glueck|first1=Katie|title=Cruz's bid for a 'full Grassley' succeeds at the wire|url=https://www.politico.com/blogs/iowa-caucus-2016-live-updates/2016/02/ted-cruz-full-grassley-iowa-218543|website=[[Politico]]|date=February 1, 2016|access-date=February 3, 2016|url-status = live|archive-url=https://web.archive.org/web/20160202091854/http://www.politico.com/blogs/iowa-caucus-2016-live-updates/2016/02/ted-cruz-full-grassley-iowa-218543|archive-date=February 2, 2016}}</ref>

In 2018, Grassley suggested that no women were serving on the Senate Judiciary Committee because of the heavy workload.<ref>{{Cite news|url=https://www.washingtonpost.com/powerpost/grassley-suggests-absence-of-women-on-judiciary-due-to-committees-heavy-workload/2018/10/05/b289c0fe-c8e7-11e8-b1ed-1d2d65b86d0c_story.html|title=Grassley suggests absence of women on Judiciary due to committee's heavy workload|last=Kane|first=Paul|newspaper=[[The Washington Post]]|language=en|date=October 5, 2018|access-date=October 11, 2018|archive-date=October 10, 2018|archive-url=https://web.archive.org/web/20181010181049/https://www.washingtonpost.com/powerpost/grassley-suggests-absence-of-women-on-judiciary-due-to-committees-heavy-workload/2018/10/05/b289c0fe-c8e7-11e8-b1ed-1d2d65b86d0c_story.html|url-status=live}}</ref> The following week, Grassley added that he would "welcome more women" to serve on the Committee "because women as a whole are smarter than most male senators. And they work real hard, too".<ref>{{cite news|url=https://www.desmoinesregister.com/story/news/politics/2018/10/09/iowa-sen-chuck-grassley-women-smarter-judiciary-committee-women-kavanaugh-metoo-blasey-ford/1579400002/|title=Chuck Grassley: Judiciary should have more women, because they 'are smarter than most male senators'|work=[[The Des Moines Register]]|last=Leys|first=Tony|date=October 8, 2018|access-date=October 12, 2018}}</ref>

In July 2018, after President [[Donald Trump]] nominated [[Brett Kavanaugh]] to the Supreme Court,<ref>{{Cite news |url=https://www.nytimes.com/2018/07/09/us/politics/brett-kavanaugh-supreme-court.html |title=Brett Kavanaugh Is Trump's Pick for Supreme Court |last1=Landler |first1=Mark |date=July 9, 2018 |work=[[The New York Times]] |last2=Haberman |first2=Maggie |access-date=July 26, 2018 |archive-date=July 10, 2018 |archive-url=https://archive.today/20180710011707/https://www.nytimes.com/2018/07/09/us/politics/brett-kavanaugh-supreme-court.html |url-status=live }}</ref> Grassley lauded Kavanaugh as "one of the most qualified Supreme Court nominees to come before the Senate",<ref>{{cite news|url=https://www.desmoinesregister.com/story/news/politics/2018/07/09/chuck-grassley-trump-supreme-court-nominee-brett-kavanaugh-superb-choice/768933002/|title=Chuck Grassley: Trump's Supreme Court nominee Brett Kavanaugh a 'superb' choice|date=July 9, 2018|first=Brianne|last=Pfannenstiel|newspaper=[[Des Moines Register]]|access-date=July 26, 2018}}</ref> and said that critics of Kavanaugh should lessen their confidence in how he would vote given past surprises in voting by members of the Court.<ref>{{cite news|url=https://www.desmoinesregister.com/story/news/politics/2018/07/11/chuck-grassley-supreme-court-nominee-brett-kavanaugh-rule-abortion/774873002/|title=Grassley: 'How are you going to know' how Supreme Court nominee Brett Kavanaugh will rule?|date=July 11, 2018|first=Stephen|last=Gruber-Miller|newspaper=[[The Des Moines Register]]|access-date=July 26, 2018}}</ref>

In 2016, Senate Republicans refused to consider Obama's nomination of [[Merrick Garland Supreme Court nomination|Merrick Garland to the Supreme Court]]. At the time, Grassley said that the "American people shouldn't be denied a voice" in the nomination, which was "too important to get bogged down in politics". In 2020, after a Supreme Court vacancy arose due to Justice [[Ruth Bader Ginsburg]]'s death, Grassley supported a prompt vote on Trump's nominee, backing the decision of "the current chairman of the Judiciary Committee and the Senate Majority Leader".<ref>{{cite news |title=Where Senate Republicans Stand on Filling the Supreme Court Vacancy |url=https://www.wsj.com/graphics/2020-scotus-senate/ |access-date=September 27, 2020 |work=[[The Wall Street Journal]] |archive-url=https://archive.today/20200927061343/https://www.wsj.com/graphics/2020-scotus-senate/ |archive-date=September 27, 2020 |url-status=live }}</ref>

==== 2021–present ====
[[File:Joe Biden and Chuck Grassley Shaking Hands February 2, 2022.jpg|thumb|Grassley meeting with President [[Joe Biden]], February 2022]]
Grassley was participating in the certification of the [[2021 United States Electoral College vote count]] when Trump supporters [[January 6 United States Capitol attack|attacked the U.S. Capitol]]. He was removed from the Senate chamber and taken to a secure location when rioters entered the building.<ref>{{cite news |last1=Gruber-Miller |first1=Stephen |last2=Pfannenstiel |first2=Brianne |title='Sad day in our democracy,' lawmakers react, U.S. Sen. Chuck Grassley escorted out of Senate after Trump supporters breach Capitol |url=https://www.thehawkeye.com/story/news/politics/2021/01/06/iowa-sen-chuck-grassley-led-out-us-senate-mayhem-erupts-capitol-donald-trump-electoral-college-loss/6568081002/ |access-date=January 10, 2021 |work=The Hawk Eye Newspaper |date=January 6, 2021}}</ref> In the wake of the attack, Grassley said that Trump "displayed poor leadership in his words and actions, and he must take responsibility".<ref>{{cite news |last1=Oates |first1=Trevor |title=Rep. Axne will support impeaching President Trump again, Reps. Hinson, Feenstra will not |url=https://kwwl.com/2021/01/08/rep-axne-will-support-impeaching-president-trump-again-reps-hinson-feenstra-will-not/ |access-date=January 10, 2021 |work=KWWL |date=January 8, 2021}}</ref> He said efforts to impeach Trump would risk "further disunity" and that "the country must take steps to tone down political rhetoric and mend divisions".<ref>{{cite news |last1=McCullough |first1=Caleb |title=Iowa's congressional delegation split along party lines over impeachment |url=https://dailyiowan.com/2021/01/08/iowas-congressional-delegation-split-along-party-lines-over-impeachment/ |access-date=January 10, 2021 |work=The Daily Iowan |date=January 8, 2021}}</ref> In response, ''[[The Gazette (Cedar Rapids)|The Gazette]]'' editorial board wrote that Grassley and other Iowa Republicans "must reckon with why they did the wrong thing for so long".<ref>{{cite news |author=Staff Editorial|title=Gazette editorial: Iowa Republicans must face a reckoning |url=https://www.thegazette.com/subject/opinion/staff-editorial/gazette-editorial-iowa-republicans-must-face-a-reckoning-20210108 |access-date=January 10, 2021 |work=The Gazette |date=January 8, 2021 |language=en}}</ref>

On January 3, 2023, Grassley became the [[Dean of the United States Senate]].<ref>{{cite web|url=https://www.grassley.senate.gov/news/news-releases/grassley-sworn-in-to-eighth-senate-term|title=Grassley Sworn in to Eighth Senate Term Grassley becomes Dean of Senate|publisher=Grassley.senate.gov|date=January 3, 2023|access-date=August 7, 2025}}</ref><ref>{{cite web|last=Clausen|first=Luke|url=https://iowacapitaldispatch.com/2023/01/07/d-c-dispatch-iowa-house-members-finally-sworn-in-grassley-becomes-dean-of-the-senate/|title=D.C. Dispatch: Iowa House members finally sworn in; Grassley becomes dean of the Senate|publisher=[[Iowa Capital Dispatch]]|date=January 7, 2023|access-date=August 7, 2025}}</ref>

=== 2028 ===
{{Main|2028 United States Senate elections}}
On November 16, 2022, Grassley filed for reelection for a ninth term in 2028.<ref>{{cite web|url=https://docquery.fec.gov/cgi-bin/forms/S0IA00028/1661660/|title=FEC Report 2 for FEC-1661660|work=Federal Election Commission|date=November 16, 2022|accessdate=December 17, 2022}}</ref><ref name="The Hill">{{cite web|last=Schonfeld|first=Zach|url=https://thehill.com/homenews/campaign/3740578-grassley-has-already-filed-for-reelection-bid-in-2028/|title=Grassley has already filed for reelection bid in 2028|work=[[The Hill (newspaper)|The Hill]]|date=November 17, 2022|access-date=June 17, 2025}}</ref><ref name= "KTVO">{{cite web|url=https://ktvo.com/news/local/iowa-republican-senator-chuck-grassley-files-for-re-election-bid-in-2028|title=Iowa Republican Senator Chuck Grassley files for reelection bid in 2028|work=[[KTVO]]|date=November 16, 2022|access-date=June 17, 2025}}</ref> He would be 95 at the time of the election and 101 at the end of the term.<ref name="The Hill"/><ref name= "KTVO"/>

=== Senate record for consecutive votes ===
As of November 2015, Grassley had cast 12,000 votes,<ref>{{cite news |last1=Carney |first1=Jordain |title=Senators praise Grassley's voting record |url=https://thehill.com/blogs/floor-action/senate/258962-senators-praise-grassleys-voting-record/ |access-date=November 17, 2020 |work=[[The Hill (newspaper)|The Hill]] |date=November 3, 2015}}</ref> and as of July 2012, he had missed only 35 votes in his Senate career.<ref>{{cite news|last=O'Keefe|first=Ed|title=Susan Collins casts her 5,000th consecutive vote|url=https://www.washingtonpost.com/blogs/2chambers/post/susan-collins-casts-her-5000th-consecutive-vote/2012/07/12/gJQAL23rfW_blog.html|newspaper=[[The Washington Post]]|access-date=July 12, 2012|url-status = live|archive-url=https://web.archive.org/web/20120713022840/http://www.washingtonpost.com/blogs/2chambers/post/susan-collins-casts-her-5000th-consecutive-vote/2012/07/12/gJQAL23rfW_blog.html|archive-date=July 13, 2012}}</ref> In January 2016, he set a record for the most times without a missed roll-call vote, having not missed one since July 1993, when he was touring Iowa with President Bill Clinton to survey flood damage.<ref name=Hawkingsrecord>{{cite news |last1=Hawkings |first1=David |title=Unnoticed, Grassley Sets Record for Most Time Without a Missed Senate Vote |url=https://www.rollcall.com/2016/01/20/unnoticed-grassley-sets-record-for-most-time-without-a-missed-senate-vote/ |access-date=November 17, 2020 |work=[[Roll Call]] |date=January 20, 2016}}</ref> In November 2020, this streak came to an end after over 27 years and 8,927 votes<ref>{{cite news |last1=Lesniewski |first1=Niels |title=Grassley Senate vote streak is over, misses his first roll call in 27 years |url=https://www.rollcall.com/2020/11/17/grassley-senate-vote-streak-is-over-misses-his-first-roll-call-in-27-years/ |access-date=November 17, 2020 |work=[[Roll Call]] |date=November 17, 2020}}</ref> when he quarantined after being exposed to [[COVID-19]].<ref>{{cite news |last1=Gruber-Miller |first1=Stephen |title=Sen. Chuck Grassley in quarantine following coronavirus exposure |url=https://eu.desmoinesregister.com/story/news/politics/2020/11/17/iowa-sen-chuck-grassley-in-quarantine-following-coronavirus-covid-19-exposure/6323513002/ |access-date=November 17, 2011 |work=[[Des Moines Register]] |date=November 17, 2020}}</ref> Grassley broke Senator [[William Proxmire]]'s record for most time without a missed vote, but Proxmire holds the record for most consecutive roll-call votes, with 10,252.<ref name=Hawkingsrecord/>

=== Committee assignments ===
Grassley's committee assignments for the 118th Congress are as follows:<ref name="118thCongressAssignments">{{Cite web|url=https://www.senate.gov/general/committee_assignments/assignments.htm|title=Committee Assignments of the 118th Congress|access-date=2023-03-17|website=United States Senate}}</ref>
* [[United States Senate Committee on Agriculture, Nutrition, and Forestry|Committee on Agriculture, Nutrition, and Forestry]]
** [[United States Senate Agriculture Subcommittee on Commodities, Markets and Trade|Subcommittee on Commodities, Markets and Trade]]
** [[United States Senate Agriculture Subcommittee on Rural Development and Energy|Subcommittee on Rural Development and Energy]]
* [[United States Senate Committee on Finance|Committee on Finance]]
** [[United States Senate Finance Subcommittee on Fiscal Responsibility and Economic Growth|Subcommittee on Fiscal Responsibility and Economic Growth]] (Ranking Member)
** [[United States Senate Finance Subcommittee on Health Care|Subcommittee on Health Care]]
** [[United States Senate Finance Subcommittee on Taxation and IRS Oversight|Subcommittee on Taxation and IRS Oversight]]
* [[United States Senate Committee on the Budget|Committee on the Budget]] (Ranking Member)
* [[United States Senate Committee on the Judiciary|Committee on the Judiciary]]
** [[United States Senate Judiciary Subcommittee on Competition Policy, Antitrust and Consumer Rights|Subcommittee on Competition Policy, Antitrust and Consumer Rights]]
** [[United States Senate Judiciary Subcommittee on Criminal Justice and Counterterrorism|Subcommittee on Criminal Justice and Counterterrorism]]
** [[United States Senate Judiciary Subcommittee on Federal Courts, Oversight, Agency Action and Federal Rights|Subcommittee on Federal Courts, Oversight, Agency Action and Federal Rights]]
** [[United States Senate Judiciary Subcommittee on Immigration, Citizenship and Border Safety|Subcommittee on Immigration, Citizenship and Border Safety]]
* [[United States Congressional Joint Committee on Taxation|Joint Committee on Taxation]] 
* [[United States Senate Caucus on International Narcotics Control]] (Co-chair)

=== Caucus membership ===
* [[Senate Republican Conference]]
* [[Rare Disease Caucus]]<ref>{{cite web|title=Rare Disease Congressional Caucus|author=|url=https://everylifefoundation.org/rare-advocates/rarecaucus/rarecaucus-members/|format=|publisher=Every Life Foundation for Rare Diseases|date=|accessdate=20 March 2025}}</ref>
* [[Senate Taiwan Caucus]]<ref>{{cite web|title=Senate Taiwan Caucus 118th Congress (2023-2024)|author=|url=https://fapa.org/senate-taiwan-caucus/|format=|publisher=Formosan Association for Public Affairs|date=February 5, 2004|accessdate=25 March 2025}}</ref>

== Political positions ==
=== Abortion ===
Grassley has said that he considers himself [[pro-life]] and has expressed concern about the potential for abortions to be paid for with federal funds.<ref>{{cite news|url=http://globegazette.com/news/local/north-iowans-ask-grassley-questions-on-health-care-reform/article_08a1711c-3dbe-11df-84ab-001cc4c03286.html|title=North Iowans ask Grassley questions on health care reform|date=April 1, 2010|work=GlobeGazette.com|access-date=September 27, 2015|url-status = live|archive-url=https://web.archive.org/web/20161115074021/http://globegazette.com/news/local/north-iowans-ask-grassley-questions-on-health-care-reform/article_08a1711c-3dbe-11df-84ab-001cc4c03286.html|archive-date=November 15, 2016}}</ref> In December 1981, he voted for a proposed constitutional amendment by [[Orrin Hatch]] that would allow both Congress and the states to ban or regulate abortion.<ref>{{cite news|url=https://www.nytimes.com/1981/12/17/us/anti-abortion-bill-voted-4-0.html|title=Anti-Abortion Bill Voted, 4-0|date=December 17, 1981|work=[[The New York Times]]|access-date=July 26, 2018|archive-date=July 26, 2018|archive-url=https://web.archive.org/web/20180726201946/https://www.nytimes.com/1981/12/17/us/anti-abortion-bill-voted-4-0.html|url-status=live}}</ref> In 2019, he co-sponsored reintroducing the Pain-Capable Unborn Child Protection Act.<ref>{{Cite web|url=http://votesmart.org/|title=The Voter's Self Defense System|website=Vote Smart|language=en|access-date=March 4, 2019|archive-date=May 23, 2019|archive-url=https://web.archive.org/web/20190523182305/https://votesmart.org/|url-status=live}}</ref> Grassley approved of the 2022 [[Dobbs v. Jackson Women's Health Organization|overturning of ''Roe v. Wade'']], saying it empowered people through their elected representatives to make "commonsense policy decisions".<ref>{{cite web |last1=Grassley |first1=Chuck |title="For many today's decision is about far more than correcting Roe it means that the rights of the unborn are no longer in jeopardy This ruling empowers the ppl thru their elected reps to make commonsense policy decisions It takes policymaking out of the hands of unelected judges" |url=https://twitter.com/ChuckGrassley/status/1540343189781024768 |website=[[Twitter]] |access-date=24 June 2022 |language=en}}</ref>

=== Agriculture ===
In April 2019, Grassley was one of seven senators to sign a letter led by [[Debbie Stabenow]] and [[Joni Ernst]] to [[United States Secretary of Agriculture|United States secretary of agriculture]] [[Sonny Perdue]] urging the Agriculture Department to implement conservation measures in the 2018 Farm Bill "through a department-wide National Water Quality Initiative, which would build off the existing initiative housed at the Natural Resource Conservation Service".<ref>{{cite news|url=https://www.hoosieragtoday.com/senators-urge-department-wide-usda-initiative-prioritize-farm-bill-water-quality-improvements/|title=Senators Urge Department-Wide USDA Initiative to Prioritize Farm Bill Water Quality Improvements|date=April 17, 2019|publisher=hoosieragtoday.com|access-date=July 7, 2019|archive-date=November 13, 2020|archive-url=https://web.archive.org/web/20201113030227/https://hoosieragtoday.com/senators-urge-department-wide-usda-initiative-prioritize-farm-bill-water-quality-improvements/|url-status=live}}</ref>

=== Antitrust ===
In October 2021, Grassley and Senator [[Amy Klobuchar]] introduced the [[American Innovation and Choice Online Act]] (S.2992) .<ref name=":12">{{Cite web |title=Klobuchar, Grassley, Colleagues to Introduce Bipartisan Legislation to Rein in Big Tech |url=https://www.klobuchar.senate.gov/public/index.cfm/2021/10/klobuchar-grassley-colleagues-to-introduce-bipartisan-legislation-to-rein-in-big-tech |access-date=2022-02-28 |website=U.S. Senator Amy Klobuchar |language=en}}</ref> The legislation aims to prevent [[Big tech companies|Big Tech companies]] from engaging in [[anti-competitive behavior]] by "self-preferencing" their products.<ref name="Ghaffary">{{Cite web |last=Ghaffary |first=Shirin |date=2021-06-11 |title=What you need to know about the House's opening bid to rein in Big Tech |url=https://www.vox.com/recode/22529779/antitrust-bills-house-big-tech |access-date=2022-02-28 |website=[[Vox (website)|Vox]] |language=en}}</ref> Grassley voted to confirm [[Jonathan Kanter]] as [[United States Assistant Attorney General|Assistant Attorney General]] for the [[United States Department of Justice|Department of Justice]] [[Antitrust Division]].<ref>{{Cite web |last=Feiner |first=Lauren |date=2021-11-16 |title=Senate confirms Big Tech critic Jonathan Kanter to lead DOJ Antitrust Division |url=https://www.cnbc.com/2021/11/16/senate-confirms-jonathan-kanter-to-lead-doj-antitrust-division.html |access-date=2022-03-13 |website=[[CNBC]] |language=en}}</ref>

=== Energy and environment ===
Grassley has expressed concern about the impact of regulations by the [[United States Environmental Protection Agency|Environmental Protection Agency]] on farming.<ref>{{cite news|url=http://www.desmoinesregister.com/story/money/agriculture/2014/05/24/chuck-grassley-wants-meeting-epa-agriculture-rules-environment/9530119|title=Grassley wants to meet with EPA over agriculture rules|work=[[The Des Moines Register]]|date=May 23, 2014|access-date=September 27, 2015}}</ref> He said the EPA has a "public relations problem" with "the ethanol industry, corn farmers and [himself]",<ref>{{Cite web|last1=Eller|first1=Donnelle|title=After playing 'footsie with big oil companies,' EPA has a 'public relations problem' with farmers, Grassley says|url=https://www.desmoinesregister.com/story/money/agriculture/2019/10/22/grassley-says-epa-has-big-public-relations-problem-farmers/4063027002/|newspaper=[[Des Moines Register]]|date=October 22, 2019}}</ref> and that the EPA has "screwed" farmers with 31 biofuel exemptions.<ref>{{Cite web|title=Grassley says EPA 'screwed' farmers with biofuels exemptions|url=https://www.keyc.com/2019/08/16/grassley-says-epa-screwed-farmers-with-biofuels-exemptions/|website=[[KEYC-TV|keyc.com]]|date=August 16, 2019|access-date=December 25, 2019|archive-date=December 25, 2019|archive-url=https://web.archive.org/web/20191225203041/https://www.keyc.com/2019/08/16/grassley-says-epa-screwed-farmers-with-biofuels-exemptions/|url-status=live}}</ref> On December 19, 2019, after the EPA withdrew a new [[Renewable Fuel Standard (United States)|Renewable Fuel Standard]] (RFS) rule, Grassley criticized the EPA for "playing games and not helping President Trump with farmers".<ref>{{Cite web|last1=Crampton|first1=Liz|title=EPA backing off from new RFS rule|url=https://www.politico.com/newsletters/morning-agriculture/2019/12/20/epa-backing-off-from-new-rfs-rule-783932|website=[[Politico]]|date=December 20, 2019|access-date=December 25, 2019|archive-date=December 25, 2019|archive-url=https://web.archive.org/web/20191225203039/https://www.politico.com/newsletters/morning-agriculture/2019/12/20/epa-backing-off-from-new-rfs-rule-783932|url-status=live}}</ref>

In 1992, Grassley authored [[Energy Policy Act of 1992|EPACT 1992]], which created the federal wind energy tax credit.<ref>{{cite web|title=Wind Energy Production Tax Credit|url=https://www.grassley.senate.gov/news/news-releases/wind-energy-production-tax-credit|website=senate.gov|access-date=April 29, 2020|archive-date=June 15, 2020|archive-url=https://web.archive.org/web/20200615222218/https://www.grassley.senate.gov/news/news-releases/wind-energy-production-tax-credit|url-status=live}}</ref>

In 2005, Grassley authored the tax title of [[Energy Policy Act of 2005|EPACT 2005]] when he was chairman of the [[United States Senate Committee on Finance|Senate Finance Committee]].<ref name=GrassleySenateGov>{{Cite web|title=Grassley Advances Alternative Energy Production Tax Priorities|url=https://www.grassley.senate.gov/news/news-releases/grassley-advances-alternative-energy-production-tax-priorities-0|website=senate.gov|date=June 19, 2007|access-date=December 25, 2019|archive-date=December 25, 2019|archive-url=https://web.archive.org/web/20191225204712/https://www.grassley.senate.gov/news/news-releases/grassley-advances-alternative-energy-production-tax-priorities-0|url-status=live}}</ref> On June 28, 2005, he voted for the bill.<ref>{{Cite web|title=Roll Call Vote 109th Congress - 1st Session|url=https://www.senate.gov/legislative/LIS/roll_call_lists/roll_call_vote_cfm.cfm?congress=109&session=1&vote=00158|website=senate.gov|date=June 28, 2005|access-date=December 25, 2019|archive-date=December 15, 2019|archive-url=https://web.archive.org/web/20191215193421/https://www.senate.gov/legislative/LIS/roll_call_lists/roll_call_vote_cfm.cfm?congress=109&session=1&vote=00158|url-status=live}}</ref> On June 19, 2007, Grassley helped expand tax incentives that produces energy from alternative sources including ethanol, wind, biomass, and biodiesel.<ref name=GrassleySenateGov/> On June 21, 2007, Grassley voted for the [[Energy Independence and Security Act of 2007]], which expanded other energy tax incentives through 2013.<ref>{{Cite web|title=Roll Call Vote 110th Congress - 1st Session|url=https://www.senate.gov/legislative/LIS/roll_call_lists/roll_call_vote_cfm.cfm?congress=110&session=1&vote=00226|website=senate.gov|date=June 21, 2007|access-date=December 25, 2019|archive-date=November 16, 2019|archive-url=https://web.archive.org/web/20191116233918/https://www.senate.gov/legislative/LIS/roll_call_lists/roll_call_vote_cfm.cfm?congress=110&session=1&vote=00226|url-status=live}}</ref><ref name=GrassleySenateGov/>

In September 2015, Grassley received the Dr. Harold D. Prior "Friend of Iowa Wind Energy" award from the Iowa Wind Energy Association for his commitment to supporting wind energy development in Iowa.<ref>{{cite news|title=Grassley named a Friend of Iowa Wind Energy|url=http://www.kmaland.com/ag/grassley-named-a-friend-of-iowa-wind-energy/article_0995c98a-523d-11e5-9c10-8fddffcce744.html|access-date=September 27, 2015|publisher=KMA Land|archive-date=July 31, 2020|archive-url=https://web.archive.org/web/20200731184439/https://www.kmaland.com/ag/grassley-named-a-friend-of-iowa-wind-energy/article_0995c98a-523d-11e5-9c10-8fddffcce744.html|url-status=live}}</ref>

In 2017, the [[Environmental Working Group]] stated that Grassley received $367,763 in grain commodity subsidies over 21 years.<ref>{{Cite web|last1=Eller|first1=Donnelle|title=Grassley netted nearly $370,000 in farm subsidies, environmental group says|url=https://www.desmoinesregister.com/story/money/agriculture/2017/12/08/grassley-netted-nearly-370-000-farm-subsidies-environmental-group-says/932067001/|newspaper=[[Des Moines Register]]|date=December 8, 2017|access-date=April 29, 2020}}</ref>

Grassley supports federal [[ethanol]] subsidies.<ref>{{cite news|url=https://www.washingtonpost.com/wp-dyn/content/article/2010/11/23/AR2010112306921.html|title=Grassley's ethanol challenge|newspaper=[[The Washington Post]]|date=November 24, 2010|url-status = live|archive-url=https://web.archive.org/web/20161115074148/http://www.washingtonpost.com/wp-dyn/content/article/2010/11/23/AR2010112306921.html|archive-date=November 15, 2016}}</ref>

In 2017, of the [[Paris Agreement]], Grassley said, "unequal terms put the U.S. economy at a significant disadvantage while letting large economies like China’s and India’s off the hook".<ref>{{Cite web|last1=Tysver|first1=Robynn|title=Iowa and Nebraska lawmakers stand by Trump on Paris climate accord|url=https://www.omaha.com/news/state_and_regional/iowa-and-nebraska-lawmakers-stand-by-trump-on-paris-climate/article_12ab754f-3390-5176-9e34-f2c82aaf11e1.html|newspaper=[[Omaha World-Herald]]|date=June 3, 2017|access-date=December 25, 2019|archive-date=December 25, 2019|archive-url=https://web.archive.org/web/20191225204705/https://www.omaha.com/news/state_and_regional/iowa-and-nebraska-lawmakers-stand-by-trump-on-paris-climate/article_12ab754f-3390-5176-9e34-f2c82aaf11e1.html|url-status=live}}</ref> He also said he didn't like that the Senate had not voted on the agreement.<ref>{{Cite web|last1=Boden|first1=Sarah|title=Grassley Fields Questions On Healthcare, Paris Agreement At Town Hall|url=https://www.iowapublicradio.org/post/grassley-fields-questions-healthcare-paris-agreement-town-hall#stream/0|website=[[Iowa Public Radio]]|date=June 2, 2017}}</ref>

=== Estate taxes ===
Grassley is in favor of repealing the [[Estate tax in the United States|estate tax]], which is a tax on inherited assets above $5.5 million for individuals and $11 million for couples.<ref>{{Cite news|url=https://thehill.com/policy/finance/363039-grassley-ending-estate-tax-recognizes-people-that-are-investing-not-spending/|title=Grassley: Ending estate tax 'recognizes people that are investing,' not 'spending every darn penny'|last=Samuels|first=Brett|date=December 3, 2017|work=[[The Hill (newspaper)|The Hill]]|access-date=December 3, 2017|archive-date=December 4, 2017|archive-url=https://web.archive.org/web/20171204014826/http://thehill.com/policy/finance/363039-grassley-ending-estate-tax-recognizes-people-that-are-investing-not-spending|url-status=live}}</ref><ref name=":0">{{Cite news|url=https://www.desmoinesregister.com/story/news/2017/12/02/tax-reform-iowa-farmers-estate-tax/906946001/|title=Despite lawmakers' warnings, few Iowa farmers face estate tax|author=Noble, Jason|work=[[Des Moines Register]]|access-date=December 3, 2017|language=en}}</ref> He has argued that the estate tax is potentially ruinous for farmers and small business owners.<ref name=":0" /> According to the ''[[Des Moines Register]]'', Grassley's argument does not "match the reality found in federal tax data – particularly for Iowa. The estate tax applies to around 5,000 taxpayers across the entire country each year, and very few of them come from Iowa. Of the Iowans subject to the tax, only a fraction are actually farmers, and a vanishingly small number of them face a tax bill requiring them to sell off farmland or other assets... The number of small businesses impacted by the estate tax is similarly small."<ref name=":0" />

=== Fundraising ===
According to the nonpartisan [[OpenSecrets]], as of 2010 the industries that have been the largest contributors to Grassley during his political career are health professionals ($1 million in contributions), insurance industry ($997,674), lawyers/law firms ($625,543), and pharmaceuticals/health products ($538,680). His largest corporate donors have been [[Blue Cross Blue Shield]], [[Amgen]], and [[Wells Fargo]].<ref>{{cite web|publisher=[[OpenSecrets]] |access-date=February 26, 2010|url=http://www.opensecrets.org/politicians/industries.php?cycle=Career&cid=N00001758&type=I|title=Chuck Grassley: Campaign Finance/Money – Industries|url-status = live|archive-url=https://web.archive.org/web/20090821012541/http://www.opensecrets.org/politicians/industries.php?cycle=Career&cid=N00001758&type=I|archive-date=August 21, 2009}}</ref>

=== Gun law ===
In 2010, Grassley had an "A" rating from the [[NRA Political Victory Fund]] (NRA-PVF),<ref name="Vote Smart1004G">{{cite web|title=The Voter's Self Defense System|url=https://votesmart.org/interest-group/1324/rating/5589#.WdUz0RNSxE4|website=Vote Smart|access-date=October 4, 2017|url-status = live|archive-url=https://web.archive.org/web/20171005000427/https://votesmart.org/interest-group/1324/rating/5589#.WdUz0RNSxE4|archive-date=October 5, 2017}}</ref> rising to "A+" ratings and endorsements in 2016 and 2022.<ref name="nrapvf-2016">{{cite web |title=VOTE FREEDOM FIRST ON OR BEFORE NOVEMBER 8TH – VOTE CHUCK GRASSLEY FOR U.S. SENATE! |url=https://www.nrapvf.org/emails/2016/iowa/nra-pvf-endorses-chuck-grassley-for-us-senate/ |website=nrapvf.org |publisher=NRA-PVF |archive-url=https://web.archive.org/web/20210115210045/https://www.nrapvf.org/emails/2016/iowa/nra-pvf-endorses-chuck-grassley-for-us-senate/ |archive-date=January 15, 2021 |language=en-US |url-status=live}}</ref><ref>{{cite web |title=NRA-PVF - Grades - Iowa |url=https://www.nrapvf.org/grades/iowa |website=nrapvf.org |publisher=NRA-PVF |archive-url=https://web.archive.org/web/20221108112323/https://www.nrapvf.org/grades/iowa |archive-date=November 8, 2022 |language=en-US |url-status=usurped}}</ref><ref name="nrapvf-2022">{{cite web |title=Vote Freedom First. Vote Chuck Grassley for U.S. Senate! |url=https://www.nrapvf.org/campaigns/2022/vote-chuck-grassley/ |website=nrapvf.org |publisher=NRA-PVF |archive-url=https://web.archive.org/web/20221009182925/https://www.nrapvf.org/campaigns/2022/vote-chuck-grassley/ |archive-date=October 9, 2022 |language=en-US |url-status=live}}</ref>

Grassley has argued that gun laws are ineffective without improved mental health care.<ref name="Shabad1004G">{{cite web|last1=Shabad|first1=Rebecca|title=Grassley: Gun control ineffective until mental issues are addressed|url=https://thehill.com/blogs/blog-briefing-room/news/182744-grassley-gun-control-ineffective-until-mental-issues-are-addressed/|website=[[The Hill (newspaper)|The Hill]]|access-date=October 4, 2017|date=September 18, 2013|url-status = live|archive-url=https://web.archive.org/web/20171005100653/http://thehill.com/blogs/blog-briefing-room/news/323037-grassley-gun-control-ineffective-until-mental-issues-are-addressed|archive-date=October 5, 2017}}</ref> Grassley opposed the Manchin-Toomey gun control amendment, and instead proposed alternative legislation to increase prosecutions of gun violence and increase reporting of mental health data in background checks.<ref name="Ed Tibbetts"/>

In 2016, one month after the [[Orlando nightclub shooting]], Grassley proposed legislation to expand state-to-state access to background check data and to make it illegal for government officials to sell criminals guns as part of sting operations. Both proposals were rejected by the Senate.<ref name="Lejeune1004G">{{cite web|last1=Lejeune|first1=Tristan|title=Senate rejects gun control background check measures|url=https://thehill.com/blogs/floor-action/284182-senate-rejects-first-background-check-bill/|website=[[The Hill (newspaper)|The Hill]]|access-date=October 4, 2017|date=June 20, 2016|url-status = live|archive-url=https://web.archive.org/web/20171004013116/http://thehill.com/blogs/floor-action/284182-senate-rejects-first-background-check-bill|archive-date=October 4, 2017}}</ref> Additionally, he voted against the Democrats' Feinstein Amendment, which would make it illegal to sell guns to individuals on the terror watchlist and a Republican-sponsored bill that expanded funding for background checks.<ref name="APDMR1004G">{{cite web|title=Ernst, Grassley vote with GOP on gun control|url=http://www.desmoinesregister.com/story/news/politics/2016/06/21/ernst-grassley-vote-gop-gun-control/86164366/|website=[[Des Moines Register]]|access-date=October 4, 2017|language=en}}</ref>

In early 2017, Grassley sponsored legislation repealing an Obama-era rule that reported Social Security recipients with representative payees to the [[National Instant Criminal Background Check System]] (NICS) as prohibited from purchasing firearms. Grassley and disability rights advocates, including the [[American Civil Liberties Union|ACLU]], argued the rule unfairly stigmatized people with disabilities without due process.<ref name="ACLU_SSA">{{cite web |title=ACLU Vote Recommendation on H.J. Res 40 |url=https://www.aclu.org/letter/aclu-vote-recommendation-hj-res-40 |publisher=American Civil Liberties Union |date=February 2, 2017 |access-date=December 4, 2025}}</ref> After the [[2017 Las Vegas shooting]], Grassley, as chairman of the Senate Judiciary Committee, said the investigation was "still ongoing" and that he needed "more information before making a decision on a hearing and what it might cover".<ref name="NBC_Vegas_2017">{{cite news |title=Speaker Ryan opens door for congressional action on gun rapid-fire "bump stocks" |url=https://www.nbcnews.com/storyline/las-vegas-shooting/speaker-ryan-opens-door-action-bump-stocks-n807996 |newspaper=NBC News |date=October 5, 2017 |access-date=December 4, 2025}}</ref> In 2018, the day after the [[Parkland high school shooting]], Grassley said the government had "not done a very good job" ensuring that people with mental health disqualifications were reported to the FBI's background check system.<ref name="CNN_Parkland_2018">{{cite news |title=Amid continued string of mass shootings, gun control going nowhere in Congress |url=https://www.cnn.com/2018/02/15/politics/gun-control-congress |newspaper=CNN |date=February 15, 2018 |access-date=December 4, 2025}}</ref>

=== Health care ===
Grassley opposes the [[Patient Protection and Affordable Care Act|Affordable Care Act]] and has voted to repeal it.<ref>{{Cite news|url=https://www.vox.com/policy-and-politics/2017/6/16/15810524/senate-ahca-explain-please|title=We asked 8 Senate Republicans to explain what their health bill is trying to do|last1=Golshan|first1=Tara|date=June 16, 2017|work=[[Vox (website)|Vox]]|access-date=June 17, 2017|last2=Scott|first2=Dylan|last3=Stein|first3=Jeff|url-status = live|archive-url=https://web.archive.org/web/20170616215038/https://www.vox.com/policy-and-politics/2017/6/16/15810524/senate-ahca-explain-please|archive-date=June 16, 2017}}</ref> Before its passage, he had supported the individual mandate in health care reform.<ref>{{Cite web|title=Grassley: I Supported The Individual Mandate Before I Realized It Was Unconstitutional|date=March 25, 2010 |url=https://archive.thinkprogress.org/grassley-i-supported-the-individual-mandate-before-i-realized-it-was-unconstitutional-6374557f50af/|access-date=2021-03-05|language=en-US}}</ref><ref>{{Cite web|last=Pecquet|first=Julian|date=2012-01-09|title=Lugar haunted by past support for individual mandate|url=https://thehill.com/policy/healthcare/102212-lugar-haunted-by-past-support-for-individual-mandate/|access-date=2021-03-05|website=[[The Hill (newspaper)|The Hill]]|language=en}}</ref><ref>{{Cite web|title=Grassley backtracks on individual mandate - Live Pulse - POLITICO.com|url=https://www.politico.com/livepulse/0909/Grassley_backtracks_on_individual_mandate.html|access-date=2021-03-05|website=[[Politico]]}}</ref> Grassley engaged in lengthy negotiations with the Obama administration, as it sought health care reform with support from Republican members of Congress. These negotiations produced nothing that Grassley would support, leading Democrats to characterize Grassley's efforts as intended to delay or scupper health care reform rather than produce compromise legislation.<ref>{{Cite web|title=Is Grassley Abandoning Bipartisan Health Bill?|url=https://www.npr.org/templates/story/story.php?storyId=112044867|access-date=2021-04-08|website=[[NPR]]| date=August 20, 2009 |language=en| last1=Halloran | first1=Liz }}</ref><ref>{{Cite web|date=2021-01-29|title='Played' by GOP in the Obama era, wary Democrats and Biden go big on their own|url=https://www.latimes.com/politics/story/2021-01-29/democrats-and-biden-go-big-learning-from-obama-era-frustrations-with-republicans|access-date=2021-04-08|website=[[Los Angeles Times]]|language=en-US}}</ref><ref>{{Cite web|last=Haberkorn|first=Jennifer|title=This time, Grassley hears pro-Obamacare voices|url=https://www.politico.com/story/2017/02/chuck-grassley-obamacare-town-hall-235232|access-date=2021-04-08|website=[[Politico]]|date=February 21, 2017 |language=en}}</ref> In Obama's memoir, he describes an exchange between him and Grassley in the Oval Office as he sought to reach a compromise with Grassley. Obama asked, "If [[Max Baucus|Max [Baucus]]] took every one of your latest suggestions, could you support the bill?... Are there ''any'' changes—any at all—that would get us your vote?", to which Grassley responded, "I guess not, Mr. President."<ref>{{Cite magazine|last=Obama|first=Barack|title=Barack Obama Looks Back on His Toughest Fight|url=https://www.newyorker.com/magazine/2020/11/02/barack-obama-new-book-excerpt-promised-land-obamacare|access-date=2021-04-08|magazine=The New Yorker|language=en-us}}</ref>

In July 2017, Grassley said that Senate Republicans should be ashamed of not having repealed the ACA, and that this could result in a loss of their majority in the 2018 elections.<ref>{{cite news|url=https://thehill.com/blogs/blog-briefing-room/news/341152-grassley-republicans-will-lose-senate-majority-without/|title=Grassley: GOP will lose Senate majority without healthcare reform|author=Byrnes, Jason|date=July 8, 2017|work=[[The Hill (newspaper)|The Hill]]|access-date=August 24, 2018|archive-date=August 25, 2018|archive-url=https://web.archive.org/web/20180825002457/http://thehill.com/blogs/blog-briefing-room/news/341152-grassley-republicans-will-lose-senate-majority-without|url-status=live}}</ref>

In August 2018, Grassley was one of ten Republican senators to cosponsor legislation intended to protect ACA provisions for people with preexisting conditions.<ref name=":3">{{cite news|url=https://thehill.com/policy/healthcare/403459-ten-gop-senators-introduce-bill-aimed-at-preserving-obamacares-pre-existing/|title=GOP senators introduce bill to preserve ObamaCare's pre-existing conditions protections|author=Hellmann, Jessie|date=August 24, 2018|work=[[The Hill (newspaper)|The Hill]]|access-date=August 24, 2018|archive-date=August 24, 2018|archive-url=https://web.archive.org/web/20180824200326/http://thehill.com/policy/healthcare/403459-ten-gop-senators-introduce-bill-aimed-at-preserving-obamacares-pre-existing|url-status=live}}</ref> Health experts said the bill did not prevent insurers from excluding coverage for people with preexisting conditions.<ref name=":3" />

=== Marijuana legalization ===
In 2015, Grassley voiced his opposition to a bipartisan senate bill, [[Cannabis in the United States#Federal|the Compassionate Access, Research Expansion, and Respect States Act]], that would move [[cannabis]] from Schedule I to Schedule II. This bill would allow states with [[medical cannabis]] laws to legally prescribe it and allow for more research into its medical efficacy.<ref>{{cite web|last1=Leys|first1=Tony|title=Grassley opposes medical marijuana rescheduling|url=http://www.desmoinesregister.com/story/news/health/2015/03/11/chuck-grassley-medical-marijuana/70170440/|publisher=[[Des Moines Register]]|access-date=March 11, 2015|archive-date=May 20, 2015|archive-url=https://archive.today/20150520204634/http://www.desmoinesregister.com/story/news/health/2015/03/11/chuck-grassley-medical-marijuana/70170440/|url-status=live}}</ref> In 2019, along with Democratic U.S. Senators [[Dianne Feinstein]] and [[Brian Schatz]], Grassley introduced the Cannabidiol and Marijuana Research Expansion Act, which would expand research into medical marijuana.<ref>{{cite news |author=<!--Not stated--> |title=Live updates: Largest Nevada county still tallying mail votes |url=https://www.ketv.com/article/national-updates-and-results-presidential-race-and-us-voting/34561805 |access-date=November 5, 2020 |work=KETV |date=November 5, 2020 |language=en |archive-date=November 4, 2020 |archive-url=https://web.archive.org/web/20201104050447/https://www.ketv.com/article/national-updates-and-results-presidential-race-and-us-voting/34561805 |url-status=live }}</ref>

=== Israel Anti-Boycott Act ===
In April 2017, Grassley co-sponsored the [[Israel Anti-Boycott Act]] (s. 720), which would make it a federal crime for Americans to encourage or participate in boycotts against [[Israel]] and [[Israeli settlement]]s in the [[West Bank]] if protesting actions by the Israeli government.<ref>{{cite web|url=https://www.congress.gov/bill/115th-congress/senate-bill/720/cosponsors|title=Cosponsors - S. 720–115th Congress (2017-2018): Israel Anti-Boycott Act|date=March 23, 2017|website=www.congress.gov|access-date=September 24, 2019|archive-date=June 21, 2020|archive-url=https://web.archive.org/web/20200621142604/https://www.congress.gov/bill/115th-congress/senate-bill/720/cosponsors|url-status=live}}</ref><ref>{{Cite web|url=https://nymag.com/intelligencer/2017/07/senate-bill-would-make-it-a-federal-crime-to-boycott-israel.html|title=43 Senators Want to Make It a Federal Crime to Boycott Israeli Settlements|last=Levitz|first=Eric|date=July 19, 2017|website=[[New York (magazine)|New York Intelligencer]]|language=en|access-date=September 24, 2019|archive-date=July 27, 2020|archive-url=https://web.archive.org/web/20200727013113/https://nymag.com/intelligencer/2017/07/senate-bill-would-make-it-a-federal-crime-to-boycott-israel.html|url-status=live}}</ref> In 2019, Grassley was one of 14 Republican senators to sign a letter from [[Marco Rubio]] that involved condemning the [[Boycott, Divestment and Sanctions|BDS movement]].<ref>{{Cite web|last1=Vlahos|first1=Kelley|title=Israel Boycott Exposes Serious Rifts in the Democratic Party|url=https://www.theamericanconservative.com/articles/israel-boycott-exposes-serious-rifts-in-the-democratic-party/|newspaper=[[The American Conservative]]|date=March 5, 2019|access-date=December 25, 2019|archive-date=December 25, 2019|archive-url=https://web.archive.org/web/20191225195452/https://www.theamericanconservative.com/articles/israel-boycott-exposes-serious-rifts-in-the-democratic-party/|url-status=live}}</ref>

=== LGBT rights ===
In 2015, after the Supreme Court ruled same-sex marriage bans unconstitutional in ''[[Obergefell v. Hodges]]'', Grassley released a statement saying he believed marriage was between one man and a woman and criticized the court for not leaving the issue up to the states. But in 2022, he said in a statement that he supports same-sex marriage. Despite this, Grassley voted against the [[Respect for Marriage Act]], citing religious liberty concerns and calling the legislation unnecessary.<ref>{{Cite web|last1=Akin|first1=Katie|title=Chuck Grassley votes to block same-sex marriage bill, cites concern over religious liberty|url=https://www.desmoinesregister.com/story/news/politics/2022/11/16/chuck-grassley-votes-against-federal-same-sex-marriage-bill/69651970007/|newspaper=[[Des Moines Register]]|date=November 16, 2022|access-date=March 18, 2013}}</ref>

=== Retirement planning ===
In 2019, Grassley was one of the lead Senate co-sponsors of the SECURE Act of 2019. This bill, which became law as part of the [[2020 United States federal budget|fiscal year 2020 federal appropriations law]] signed in late December 2019, was intended to incentivize retirement planning, diversify the options available to savers, and increase access to tax-advantaged savings programs including 529 plans.<ref>{{cite news|url=https://www.washingtonpost.com/business/2019/12/23/new-law-is-bringing-big-changes-retirement-savers-especially-parents|title=A new law is bringing big changes for retirement savers, especially parents|last=Singletary|first=Michelle|date=December 23, 2019|newspaper=[[The Washington Post]]|access-date=December 30, 2019|archive-date=December 30, 2019|archive-url=https://web.archive.org/web/20191230190906/https://www.washingtonpost.com/business/2019/12/23/new-law-is-bringing-big-changes-retirement-savers-especially-parents/|url-status=live}}</ref>

=== Russian interference in 2016 elections ===
{{Main|Russian interference in the 2016 United States elections|Foreign electoral intervention}}

In February 2017, Grassley said that while Russian interference in U.S. elections was "bothersome", the United States did not have clean hands and had, for instance, interfered with the [[1948 Italian general election|1948 Italian election]].<ref>{{Cite news|url=http://qctimes.com/news/local/government-and-politics/grassley-u-s-hands-aren-t-clean/article_23acf094-e58a-580a-8351-46610d0d5c70.html|title=Grassley: U.S. hands aren't clean|last=Tibbetts|first=Ed|newspaper=The Quad-City Times|access-date=February 15, 2017|url-status = live|archive-url=https://web.archive.org/web/20170215212302/http://qctimes.com/news/local/government-and-politics/grassley-u-s-hands-aren-t-clean/article_23acf094-e58a-580a-8351-46610d0d5c70.html|archive-date=February 15, 2017}}</ref>

In January 2018, Grassley and [[Lindsey Graham]] made a [[criminal referral]] recommending charges against [[Christopher Steele]], the author of the [[Steele dossier]], alleging he had lied to federal authorities.<ref name=":1">{{Cite news|url=https://www.nytimes.com/2018/01/05/us/politics/christopher-steele-dossier-judiciary-committee.html|title=Republican Senators Recommend Charges Against Author of Trump Dossier|last1=Fandos|first1=Nicholas|date=2018|work=[[The New York Times]]|access-date=January 5, 2018|last2=Rosenberg|first2=Matthew|language=en-US|issn=0362-4331|archive-date=January 5, 2018|archive-url=https://web.archive.org/web/20180105191310/https://www.nytimes.com/2018/01/05/us/politics/christopher-steele-dossier-judiciary-committee.html|url-status=live}}</ref> According to ''The New York Times'', "It was not clear why, if a crime is apparent in the F.B.I. reports that were reviewed by the Judiciary Committee, the Justice Department had not moved to charge Mr. Steele already. The circumstances under which Mr. Steele is alleged to have lied were unclear, as much of the referral was classified."<ref name=":1" /> The December 2019 DOJ Inspector General report subsequently identified 17 significant errors and omissions in FISA applications that relied on the Steele dossier, and Special Counsel [[John Durham]]'s May 2023 report concluded the FBI "did not and could not corroborate any of the substantive allegations" in the dossier.<ref name="Durham_CNN">{{cite news |last1=Cohen |first1=Marshall |last2=Polantz |first2=Katelyn |title=Special counsel John Durham concludes FBI never should have launched full Trump-Russia probe |url=https://www.cnn.com/2023/05/15/politics/john-durham-report-fbi-trump-released |work=CNN |date=May 15, 2023 |access-date=December 4, 2025}}</ref>

FBI attorney Kevin Clinesmith pleaded guilty to altering a CIA email used in the FISA warrant process.<ref name="Clinesmith_DOJ">{{cite press release |title=FBI Attorney Admits Altering Email Used for FISA Application During "Crossfire Hurricane" Investigation |url=https://www.justice.gov/usao-ct/pr/fbi-attorney-admits-altering-email-used-fisa-application-during-crossfire-hurricane |publisher=Department of Justice |date=August 19, 2020 |access-date=December 4, 2025}}</ref> Durham also indicted [[Michael Sussmann]], a former [[Perkins Coie]] attorney, on charges of lying to the FBI; Sussmann was acquitted in May 2022.<ref name="Sussmann_acquittal">{{cite news |last=Polantz |first=Katelyn |title=Jury finds Michael Sussmann not guilty in case brought by special counsel John Durham |url=https://www.cnn.com/2022/05/31/politics/michael-sussmann-john-durham-fbi-trial-verdict |work=CNN |date=May 31, 2022 |access-date=December 4, 2025}}</ref> Durham indicted [[Igor Danchenko]], Steele's primary sub-source, on charges of lying to the FBI about his sourcing; Danchenko was acquitted in October 2022.<ref name="Danchenko_acquittal">{{cite news |last=Cohen |first=Marshall |title=Primary source for Trump-Russia dossier acquitted, handing special counsel Durham another trial loss |url=https://www.cnn.com/2022/10/18/politics/igor-danchenko-acquitted-durham |work=CNN |date=October 18, 2022 |access-date=December 4, 2025}}</ref>

In January 2018, Senator [[Dianne Feinstein]], the ranking Democrat on the Senate Judiciary Committee, unilaterally released the full transcript of an August 2017 interview the committee had conducted with [[Glenn R. Simpson|Glenn Simpson]].<ref name=":2">{{Cite news|url=https://www.politico.com/story/2018/01/09/feinstein-releases-transcript-of-interview-with-fusion-gps-co-founder-329573|title='Human source' in Trump orbit contacted FBI, Fusion GPS co-founder told senators|author=Cheney, Kyle|work=[[Politico]]|date=January 9, 2018|access-date=January 10, 2018|archive-date=January 9, 2018|archive-url=https://web.archive.org/web/20180109184549/https://www.politico.com/story/2018/01/09/feinstein-releases-transcript-of-interview-with-fusion-gps-co-founder-329573|url-status=live}}</ref> Simpson is the co-founder of [[Fusion GPS]], which produced the [[Steele dossier]]. Grassley said Feinstein's decision was "confounding" and could deter future witnesses.<ref name=":2" /> Simpson had requested the transcript's release, alleging that Republicans had selectively leaked portions to portray him negatively.<ref name=":2" /><ref>{{Cite news|url=https://www.cnbc.com/2018/01/09/sen-dianne-feinstein-unilaterally-releases-fusion-gps-testimony.html|title=Senate Democrats just released the full testimony on the Trump-Russia dossier. Here's what's in it|last=Breuninger|first=Kevin|date=January 9, 2018|work=[[CNBC]]|access-date=January 10, 2018|archive-date=January 10, 2018|archive-url=https://web.archive.org/web/20180110010358/https://www.cnbc.com/2018/01/09/sen-dianne-feinstein-unilaterally-releases-fusion-gps-testimony.html|url-status=live}}</ref>

=== Trade ===
In January 2018, Grassley was one of 36 Republican senators to sign a letter to President Trump requesting he preserve the [[North American Free Trade Agreement]] by modernizing it for the economy of the 21st century.<ref>{{cite news|url=https://thehill.com/policy/finance/371492-senate-republicans-call-on-trump-to-preserve-nafta/|title=Senate Republicans call on Trump to preserve NAFTA|date=January 30, 2018|first=Vicki|last=Needham|work=[[The Hill (newspaper)|The Hill]]|access-date=January 6, 2019|archive-date=December 23, 2018|archive-url=https://web.archive.org/web/20181223164034/https://thehill.com/policy/finance/371492-senate-republicans-call-on-trump-to-preserve-nafta|url-status=live}}</ref>

=== Whistleblowers ===
The author of the [[Whistleblower Protection Act of 1989]], Grassley has campaigned to increase protection and provide support for "[[whistleblowers]]". He has supported a number of FBI whistleblowers, including [[Coleen Rowley]], [[Sibel Edmonds]], and [[Jane Turner (FBI whistleblower)|Jane Turner]], although not supporting Department of Defense whistleblower Noel Koch.<ref name="DoD whistleblower Noel Koch">{{cite news|url=http://www.historycommons.org/entity.jsp?entity=noel_koch_1|title=1983: Neoconservative Arrives at Pentagon, Allegedly Acts as Israeli Agent within Defense Department|date=February 24, 2004|newspaper=Counterpunch|url-status = live|archive-url=https://web.archive.org/web/20161115073633/http://www.historycommons.org/entity.jsp?entity=noel_koch_1|archive-date=November 15, 2016}}</ref>

In 2016, Grassley and Senator [[Patrick Leahy]] introduced the FBI Whistleblower Protection Enhancement Act, which was signed into law on December 16, 2016. The legislation clarified that FBI employees are protected when making disclosures to supervisors within the chain of command, members of Congress, and the Office of Special Counsel.<ref name="FBI_WPEA_2016">{{cite web |title=FBI Whistleblowers to Receive Protections for Rooting out Waste, Fraud and Abuse |url=https://www.grassley.senate.gov/news/news-releases/fbi-whistleblowers-receive-protections-rooting-out-waste-fraud-and-abuse |publisher=Office of Senator Chuck Grassley |date=December 10, 2016 |access-date=November 28, 2025}}</ref> In 2017, Grassley called on the FBI to update its internal policies to comply with the new law.<ref name="Grassley_FBI_comply">{{cite web |title=Grassley Calls on FBI to Comply with Whistleblower Protection Law |url=https://www.grassley.senate.gov/news/news-releases/grassley-calls-fbi-comply-whistleblower-protection-law |publisher=Office of Senator Chuck Grassley |date=April 12, 2017 |access-date=November 28, 2025}}</ref> A 2024 [[Government Accountability Office]] report found continued deficiencies in the FBI's whistleblower protection regulations.<ref name="GovExec_FBI_WB">{{cite news |title=FBI agents would get increased whistleblower protections under bipartisan bill |url=https://www.govexec.com/workforce/2025/08/fbi-agents-would-get-increased-whistleblower-protections-under-bipartisan-bill/407206/ |newspaper=Government Executive |date=August 4, 2025 |access-date=November 28, 2025}}</ref>

In July 2025, Grassley introduced a second FBI Whistleblower Protection Enhancement Act (S. 2527), cosponsored by Senator [[Gary Peters]]. The bipartisan bill would extend protections from the 1989 Whistleblower Protection Act to FBI employees, prohibit supervisors from taking adverse personnel actions against whistleblowers, and eliminate the one-year waiting period before employees can challenge security clearance revocations.<ref name="GovExec_FBI_WB" /><ref name="Congress_S2527">{{cite web |title=S.2527 - FBI Whistleblower Protection Enhancement Act of 2025 |url=https://www.congress.gov/bill/119th-congress/senate-bill/2527/text |publisher=Congress.gov |access-date=November 28, 2025}}</ref>

On May 17, 2007, Grassley received a lifetime achievement award from the [[National Whistleblower Center]]. In April 2014, he announced plans to create a Senate caucus dedicated to strengthening whistleblower protections.<ref name="Whistleblower Protection Caucus">{{cite news|url=https://www.washingtonpost.com/blogs/federal-eye/wp/2014/04/10/sen-charles-grassley-plans-new-whistleblower-protection-caucus/|title=Sen. Charles Grassley plans new whistleblower-protection caucus|last=Hicks|first=Josh|newspaper=[[The Washington Post]]|access-date=April 19, 2014|url-status = live|archive-url=https://web.archive.org/web/20140416084711/http://www.washingtonpost.com/blogs/federal-eye/wp/2014/04/10/sen-charles-grassley-plans-new-whistleblower-protection-caucus/|archive-date=April 16, 2014}}</ref><ref>{{cite web|url=https://wcfcourier.com/news/local/govt-and-politics/grassley-grilled-on-snowden-views-at-whistleblower-talk/article_9e12d84e-af92-5518-989c-ac5115e874af.html|title=Grassley grilled on Snowden views at whistleblower talk|author=Christina Crippes |website=Waterloo Cedar Falls Courier|date=January 23, 2014 |access-date=January 25, 2019|archive-date=January 26, 2019|archive-url=https://web.archive.org/web/20190126001330/https://wcfcourier.com/news/local/govt-and-politics/grassley-grilled-on-snowden-views-at-whistleblower-talk/article_9e12d84e-af92-5518-989c-ac5115e874af.html|url-status=live}}</ref>

Grassley defended the whistleblower in the [[Trump–Ukraine scandal]], breaking with his party line, saying on October 1, 2019, that the whistleblower "appears to have followed the whistleblower protection laws and ought to be heard out and protected".<ref>{{cite news|url=https://www.nbcnews.com/politics/donald-trump/chuck-grassley-defends-ukraine-whistleblower-breaking-gop-trump-n1060871|title=Chuck Grassley defends Ukraine whistleblower, breaking with GOP and Trump|last=Gregorian|first=Dareh|newspaper=[[NBC News]]|access-date=October 2, 2019|archive-date=October 13, 2019|archive-url=https://archive.today/20191013112638/https://www.nbcnews.com/politics/donald-trump/chuck-grassley-defends-ukraine-whistleblower-breaking-gop-trump-n1060871|url-status=live}}</ref><ref>{{cite news|url=https://www.politico.com/news/2019/10/01/grassley-trump-whistleblower-014715|title=Grassley breaks with Trump over protecting whistleblower|last=Everett|first=Burgess|newspaper=[[Politico]]|date=October 1, 2019|access-date=October 2, 2019|archive-date=October 2, 2019|archive-url=https://web.archive.org/web/20191002004503/https://www.politico.com/news/2019/10/01/grassley-trump-whistleblower-014715|url-status=live}}</ref>

After whistleblowers Colonel [[Alexander Vindman]] and Ambassador [[Gordon Sondland]] testified against Donald Trump and were subsequently fired, Grassley defended Trump's firing of both whistleblowers on the grounds that their firing was not retaliatory.<ref>{{Cite web|last=Coltrain|first=Nick|title=Sen. Chuck Grassley rejects retaliation claim in Trump removing impeachment witnesses|url=https://www.desmoinesregister.com/story/news/politics/2020/02/12/chuck-grassley-donald-trump-impeachment-witnesses-no-retaliation-alexander-vindman-gordon-sondland/4736099002/|access-date=October 31, 2020|website=[[Des Moines Register]]|language=en-US}}</ref>

===Donald Trump===
Grassley supported Trump in the [[2016 United States presidential election|2016]] and [[2020 United States presidential election|2020 presidential elections]].<ref name="Pfannenstiel">{{cite news |last=Pfannenstiel |first=Brianne |title=Former President Donald Trump endorses Iowa Sen. Chuck Grassley: 'A great American patriot' |url=https://www.desmoinesregister.com/story/news/politics/2021/10/09/former-president-donald-trump-iowa-rally-endorses-u-s-senator-chuck-grassley-reelection/5947269001/ |newspaper=Des Moines Register |date=October 9, 2021 |access-date=November 28, 2025}}</ref> On May 28, 2021, Grassley voted against creating an independent commission to investigate the [[January 6 United States Capitol attack]].<ref>{{cite news |newspaper=The Washington Post |date=May 28, 2021 |title=Which senators supported a Jan. 6 Capitol riot commission |url=https://www.washingtonpost.com/politics/interactive/2021/january6-commission-senators-vote/}}</ref> Later that year, Trump endorsed Grassley's 2022 reelection bid at a rally in Iowa, calling him "a great American patriot".<ref name="Pfannenstiel"/>

In July 2025, Trump publicly criticized Grassley for maintaining the Senate's [[Blue slip (U.S. Senate)|blue slip]] tradition for federal judicial nominees, calling him "an absolute JOKE" and "totally ineffective".<ref name="ICD_blueslip">{{cite news |title=Grassley 'offended' by Trump jabs over Senate process for judicial nominees |url=https://iowacapitaldispatch.com/2025/07/31/grassley-offended-by-trump-jabs-over-senate-process-for-judicial-nominees/ |publisher=Iowa Capital Dispatch |date=July 31, 2025 |access-date=November 28, 2025}}</ref> Grassley defended the practice, saying he was "offended" by Trump's comments and that the blue slip system provides "a necessary and time-honored check on the executive branch".<ref name="ICD_blueslip" />

=== Joe Biden ===

After President Biden withdrew from the 2024 presidential race on July 21, 2024, Grassley posted on [[Twitter|X]], "The American ppl are sick & tired of the Biden-Harris open border policies + high cost of living crushing family budgets. A change in candidate doesn't fool anyone Changing horses midstream isn't going to stop the bad policies +reckless agenda at the top of the Democrat ticket".<ref>{{Cite web |author=KWQC Staff |date=2024-07-21 |title=Local politicians react to President Biden ending 2024 presidential campaign |url=https://www.kwqc.com/2024/07/21/local-politicians-react-president-biden-ending-2024-presidential-campaign/ |access-date=2024-07-22 |website=www.kwqc.com |language=en}}</ref><ref>{{Cite web |date=2024-07-21 |title=Iowa leaders react to President Biden dropping out of race |url=https://www.kcci.com/article/joe-biden-ends-reelection-campaign-what-iowa-leaders-are-saying/61656134 |access-date=2024-07-22 |website=KCCI |language=en}}</ref><ref>{{Cite web |date=2024-07-21 |title=Iowa leaders react as President Joe Biden drops reelection bid |url=https://www.weareiowa.com/article/news/politics/national-politics/joe-biden-drops-out-of-2024-race-iowa-reactions/524-2f61cb21-c49c-4d58-833d-1b9e2711b58e |access-date=2024-07-22 |website=weareiowa.com |language=en-US}}</ref><ref>{{Cite web |author=KTIV Staff |date=2024-07-21 |title=Siouxland political leaders react to Biden's withdrawal from the 2024 presidential election |url=https://www.ktiv.com/2024/07/21/siouxland-political-leaders-react-bidens-withdrawal-2024-presidential-election/ |access-date=2024-07-22 |website=www.ktiv.com |language=en}}</ref>

== Investigations ==
=== Financial oversight ===
==== Religious organizations ====
{{Main|United States Senate inquiry into the tax-exempt status of religious organizations}}

On November 5, 2007, Grassley announced an investigation into the tax-exempt status of six ministries under the leadership of [[Benny Hinn]], [[Paula White]], [[Eddie L. Long]], [[Joyce Meyer]], [[Creflo Dollar]], and [[Kenneth Copeland]] by the [[United States Senate Committee on Finance]].<ref>{{cite web|url=https://www.npr.org/templates/story/story.php?storyId=16860611|title=Senator Probes Megachurches' Finances|website=[[NPR]]|first=Kathy|last=Lohr|date=December 4, 2007|access-date=December 10, 2007|url-status=live|archive-url=https://web.archive.org/web/20071206080710/http://www.npr.org/templates/story/story.php?storyId=16860611|archive-date=December 6, 2007}}</ref> In letters to each ministry, Grassley asked for the ministries to divulge specific financial information to the committee to determine whether or not funds collected by each organization were inappropriately utilized by ministry heads.<ref>{{cite web|url=https://www.cbsnews.com/news/televangelists-living-like-kings/|title=Televangelists Living Like Kings?|website=[[CBS News]]|date=November 6, 2007|access-date=September 17, 2007|url-status=live|archive-url=https://web.archive.org/web/20071109112841/http://www.cbsnews.com/stories/2007/11/06/cbsnews_investigates/main3462147.shtml|archive-date=November 9, 2007}}</ref> By the December 6, 2007 deadline, only three of the ministries had shown compliance with the Finance Committee's request. On March 11, 2008, Grassley and Finance chairman [[Max Baucus]] sent follow-up letters to Kenneth Copeland, Creflo Dollar and Eddie Long, explaining that the Senate reserved the right to investigate the finances of their organizations under federal tax laws.<ref>{{cite web|url=http://www.pgdc.com/pgdc/grassley-baucus-urge-four-ministries-cooperate|title=Grassley, Baucus Urge Four Ministries to Cooperate|publisher=Planned Giving Design Center|date=March 12, 2008|access-date=February 4, 2009|url-status=live|archive-url=https://web.archive.org/web/20090126121815/http://www.pgdc.com/pgdc/grassley-baucus-urge-four-ministries-cooperate|archive-date=January 26, 2009}}</ref>

==== Medical research ====
Grassley also began an investigation about unreported payments to physicians by pharmaceutical companies. He led a 2008 Congressional investigation that found that well-known university [[psychiatrist]]s, who had promoted [[psychoactive drug]]s, had violated federal and university regulations by secretly receiving large sums of money from the pharmaceutical companies that made the drugs.<ref>{{cite book|last=Kirk|first=Stuart A.|title=Mad Science: Psychiatric Coercion, Diagnosis, and Drugs|year=2013|publisher=Transaction Publishers|page=21}}</ref> ''[[The New York Times]]'' reported that [[Joseph Biederman]] of Harvard University had failed to report over $1 million of income he had received from pharmaceutical companies.<ref>{{cite news|url=https://www.nytimes.com/2008/06/08/us/08conflict.html|title=Researchers Fail to Reveal Full Drug Pay|work=[[The New York Times]]|first1=Gardiner|last1=Harris|first2=Benedict|last2=Carey|date=June 8, 2008|url-status=live|archive-url=https://web.archive.org/web/20081210021458/http://www.nytimes.com/2008/06/08/us/08conflict.html|archive-date=December 10, 2008}}</ref> Weeks later, Grassley alleged that [[Alan Schatzberg]], chair of psychiatry at [[Stanford University]], had underreported his investments in [[Corcept Therapeutics]], a company he founded.<ref>{{cite news|url=http://www.businessweek.com/technology/content/jun2008/tc20080626_630542.htm|title=Drug Makers and College Labs: Too Cozy?|work=[[Business Week]]|first=Arlene|last=Weintraub|date=June 26, 2008|url-status=dead|archive-url=https://web.archive.org/web/20110524003304/http://www.businessweek.com/technology/content/jun2008/tc20080626_630542.htm|archive-date=May 24, 2011}}</ref> Schatzberg had reported only $100,000 investments in Corcept, but Grassley said his investments actually totaled over $6 million. Schatzberg later stepped down from his grant, which was funded by the [[National Institutes of Health]] (NIH).<ref>{{cite news|url=http://chronicle.com/news/article/4922/stanford-researcher-accused-of-conflicts-steps-down-as-nih-principal-investigator|title=Stanford Researcher, Accused of Conflicts, Steps Down as NIH Principal Investigator|work=[[The Chronicle of Higher Education]]|date=August 1, 2008|url-status=live|archive-url=https://web.archive.org/web/20090201150934/http://chronicle.com/news/article/4922/stanford-researcher-accused-of-conflicts-steps-down-as-nih-principal-investigator|archive-date=February 1, 2009}}</ref> Similarly, [[Charles Nemeroff]] resigned as chair of the psychiatry department at [[Emory University]] after failing to report a third of the $2.8 million in consulting fees he received from [[GlaxoSmithKline]]. At the time he received the fees, Nemeroff had been principal investigator of a $3.9 million NIH grant evaluating five medications for depression GlaxoSmithKline manufactured.<ref>{{cite news|url=https://www.latimes.com/archives/la-xpm-2008-oct-04-sci-doctors4-story.html|title=Doctor Accused in Congress' Probe|work=[[Los Angeles Times]]|date=October 4, 2008|first1=Denise|last1=Gellene|first2=Thomas H.|last2=Maugh II|url-status=live|archive-url=https://web.archive.org/web/20090201144702/http://articles.latimes.com/2008/oct/04/science/sci-doctors4|archive-date=February 1, 2009}}</ref> In 2008, for the first time, Grassley asked the [[American Psychiatric Association]] to disclose how much of its annual budget came from drug industry funds. The APA said that industry contributed 28% of its budget ($14 million at the time), mainly through paid advertising in APA journals and funds for continuing medical education.<ref name=stuarta>{{cite book|last=Kirk|first=Stuart A.|title=Mad Science: Psychiatric Coercion, Diagnosis, and Drugs|year=2013|publisher=[[Transaction Publishers]]|location=Piscataway, New Jersey|isbn=978-1412855921}}</ref>

=== Law enforcement oversight ===
==== Timothy Thibault political bias allegations ====
In May 2022, Grassley raised concerns about potential political bias by FBI Assistant Special Agent in Charge [[Timothy Thibault]] at the Washington Field Office, citing whistleblower disclosures.<ref>{{cite web |title=Grassley Raises Concerns Over Potential Political Bias in FBI's Washington Field Office |url=https://www.grassley.senate.gov/news/news-releases/grassley-raises-concerns-over-potential-political-bias-in-fbis-washington-field-office |publisher=Office of Senator Chuck Grassley |date=May 31, 2022 |access-date=December 3, 2025}}</ref> He alleged Thibault had made anti-Trump posts on social media and had taken actions to slow the FBI's investigation into [[Hunter Biden]].<ref>{{cite news |title=What to Know About Timothy Thibault, the FBI Official at Center of GOP Allegations |url=https://time.com/6209694/timothy-thibault-fbi-gop-political-bias/ |magazine=Time |date=August 30, 2022 |access-date=December 3, 2025}}</ref> Thibault's attorney denied the allegations regarding Hunter Biden and said his client welcomed any investigation.<ref>{{cite news |last=Blankstein |first=Andrew |title=Lawyer says FBI agent's retirement had nothing to do with Hunter Biden investigation |url=https://www.nbcnews.com/politics/justice-department/lawyer-says-fbi-agents-retirement-nothing-hunter-biden-investigation-rcna45529 |publisher=NBC News |date=August 31, 2022 |access-date=December 3, 2025}}</ref> Thibault left the FBI in August 2022.<ref>{{cite news |title=FBI official who Republicans accused of political bias leaves bureau |url=https://www.cbsnews.com/news/timothy-thibault-fbi-official-accused-political-bias-leaves-bureau/ |publisher=CBS News |date=August 29, 2022 |access-date=December 3, 2025}}</ref>

==== FBI Richmond Catholic memo ====
{{Main|FBI Richmond Catholic memo investigation}}

In 2023–2024, Grassley led the Senate investigation into an FBI Richmond field office memo that identified "radical traditional Catholics" as potential domestic terrorism threats. Grassley released documents he described as whistleblower disclosures showing the memo had broader distribution than the FBI initially acknowledged.<ref>{{cite news |title=Senators press FBI on alleged deletion of files related to Catholic investigation |url=https://www.catholicnewsagency.com/news/256725/senators-press-fbi-on-alleged-deletion-of-files-related-to-catholic-investigation |publisher=Catholic News Agency |date=February 2, 2024 |access-date=November 28, 2025}}</ref> The FBI retracted the memo, saying it did not meet the agency's standards.<ref>{{cite news |last=Shortell |first=David |title=FBI memo on 'radical traditionalist' Catholics withdrawn after potential violations identified |url=https://www.cnn.com/2023/02/09/politics/fbi-traditional-catholics-memo/index.html |publisher=CNN |date=February 9, 2023 |access-date=November 28, 2025}}</ref>

==== Arctic Frost investigation ====
{{Main|Arctic Frost investigation}}

Beginning in 2025, Grassley released documents related to the [[Arctic Frost investigation]], an FBI probe into efforts to overturn the [[2020 United States presidential election|2020 presidential election]] that was transferred to Special Counsel [[Jack Smith (lawyer)|Jack Smith]] in November 2022.<ref name="NBC_Arctic_Frost">{{cite news |last=Reilly |first=Ryan J. |title=The FBI analyzed Republican lawmakers' phone records during Jan. 6 probe, GOP senators say |url=https://www.nbcnews.com/politics/congress/fbi-analyzed-republican-senators-phone-records-jan-6-probe-capitol-rio-rcna236063 |publisher=NBC News |date=October 7, 2025 |access-date=November 28, 2025}}</ref> According to documents Grassley released in 2025, the investigation was opened in April 2022 by FBI assistant special agent in charge [[Timothy Thibault]], whom Grassley said violated FBI protocol by "self-approving" the case.<ref>{{cite web |title=Grassley Underscores FBI Supervisor Misconduct in Trump-Targeted Arctic Frost Investigation |url=https://www.grassley.senate.gov/news/remarks/grassley-underscores-fbi-supervisor-misconduct-in-trump-targeted-arctic-frost-investigation |publisher=Office of Senator Chuck Grassley |date=February 3, 2025 |access-date=December 3, 2025}}</ref>

In October 2025, Grassley disclosed that the FBI had obtained phone metadata for eight Republican senators and one House member from January 4–7, 2021, and called the investigation "arguably worse than Watergate."<ref name="NBC_Arctic_Frost" /><ref>{{cite web |title=Biden FBI Spied on Eight Republican Senators as Part of Arctic Frost Investigation, Grassley Oversight Reveals |url=https://www.judiciary.senate.gov/press/rep/releases/biden-fbi-spied-on-eight-republican-senators-as-part-of-arctic-frost-investigation-grassley-oversight-reveals |publisher=United States Senate Committee on the Judiciary |date=October 6, 2025 |access-date=November 28, 2025}}</ref> Later that month, he released 197 subpoenas showing the investigation targeted over 430 Republican individuals and entities.<ref name="CNN_Arctic_Frost">{{cite news |title='Arctic Frost': What to know about the controversial provision tucked into the funding bill |url=https://www.cnn.com/2025/11/17/politics/arctic-frost-provision-funding-bill |publisher=CNN |date=November 17, 2025 |access-date=November 28, 2025}}</ref> Attorneys for Jack Smith wrote to Grassley defending the subpoenas as "entirely proper, lawful, and consistent with established Department of Justice policy".<ref>{{cite news |title=Jack Smith asks to testify publicly before Congress |url=https://www.cbsnews.com/news/jack-smith-asks-to-testify-publicly-before-congress/ |publisher=CBS News |date=October 21, 2025 |access-date=November 28, 2025}}</ref>

==== Clinton campaign FEC violations ====
In November 2025, Grassley released FBI documents from 2019 showing the bureau had sought authorization to investigate [[Hillary Clinton presidential campaign, 2016|Clinton campaign]] and [[Democratic National Committee|DNC]] payments to [[Fusion GPS]] that the [[Federal Election Commission|FEC]] later determined were misreported.<ref name="SJC_Nov2025">{{cite press release |title=Grassley Releases FBI Records on DOJ Decision Not to Investigate Clinton Campaign, DNC Exposed Exposed Exposed FEC Violations |url=https://www.judiciary.senate.gov/press/rep/releases/grassley-releases-fbi-records-on-doj-decision-not-to-investigate-clinton-campaign-dnc-fec-violations |publisher=United States Senate Committee on the Judiciary |date=November 13, 2025 |access-date=November 29, 2025}}</ref> According to the documents, [[United States Department of Justice|DOJ]] officials declined to authorize the investigation in June 2019.<ref name="SJC_Nov2025" /> In March 2022, the FEC fined the Clinton campaign $8,000 and the DNC $105,000 for misreporting over $1 million in payments to the law firm [[Perkins Coie]], which had funded the Fusion GPS research that produced the [[Steele dossier]].<ref>{{cite news |last=Gerstein |first=Josh |title=FEC fines Hillary Clinton campaign and DNC over Trump dossier research |url=https://www.politico.com/news/2022/03/30/fec-fines-clinton-dnc-over-steele-dossier-research-00021617 |newspaper=[[Politico]] |date=March 30, 2022 |access-date=November 29, 2025}}</ref>

== Personal life ==

=== Family ===

Grassley married Barbara Ann Speicher on August 22, 1954. They have five children.<ref>{{Cite web|url=https://plaza.las.iastate.edu/directory/barbara-grassley/|title=Barbara Grassley|date=February 26, 2015|website=Iowa State University Plaza of Heroines|archive-url=https://web.archive.org/web/20190826062601/https://plaza.las.iastate.edu/directory/barbara-grassley/|archive-date=August 26, 2019|url-status = live|access-date=August 26, 2019}}</ref><ref>{{Cite web|url=https://www.grassley.senate.gov/about/biography|title=Grassley biography|date=November 27, 2025|website=Chuck Grassley Senate}}</ref> His grandson [[Pat Grassley]] is a member of the [[Iowa House of Representatives]] who has been Speaker of the Iowa House since 2020.<ref>{{cite web|url=https://www.congressweb.com/sfaa/legislators/info/mbr_id/2898/|title=Rep. Pat Grassley|website=CongressWeb.com}}</ref><ref>{{cite web|url=https://www.legis.iowa.gov/legislators/legislator?ga=88&personID=6277|title=Representative Pat Grassley|website=Legis.Iowa.gov|access-date=May 10, 2022}}</ref>

=== Memberships, awards, and History Channel feud ===

Grassley is a member of [[The Family (Christian political organization)|the Family]], the organization that organizes the [[National Prayer Breakfast]].<ref>{{cite web|url=http://www.salon.com/2009/07/21/c_street|title=Sex and power inside "the C Street House"|work=[[Salon (website)|Salon]]|first=Jeff|last=Sharlet|date=July 21, 2009|access-date=August 23, 2010|url-status = live|archive-url=https://web.archive.org/web/20120111090033/http://www.salon.com/2009/07/21/c_street/|archive-date=January 11, 2012}}</ref> He is also known for his widely reported, long-running "feud" with the [[History (American TV network)|History]] channel; he has consistently accused the network of featuring little actual history programming.<ref>{{cite web|last=Carter|first=Brandon|url=https://thehill.com/homenews/media/364097-grassley-renews-feud-with-history-channel-over-lack-of-history-programming/|title=Grassley renews feud with History Channel over lack of history programming|newspaper=[[The Hill (newspaper)|The Hill]]|date=December 9, 2017|access-date=January 4, 2018|archive-date=January 5, 2018|archive-url=https://web.archive.org/web/20180105180402/http://thehill.com/homenews/media/364097-grassley-renews-feud-with-history-channel-over-lack-of-history-programming|url-status=live}}</ref>

In 2003, Grassley's alma mater, the [[University of Northern Iowa]], selected him for ''honoris causa'' membership in [[Omicron Delta Kappa]], the National Leadership Honor Society. In 2009, the [[National Center for Health Research]]<ref>{{cite web|url=http://www.center4research.org/news-events/previous-foremother-awards|title=Previous Foremothers and Health Policy Heroes|publisher=National Research Center for Women & Families|year=2010|access-date=August 23, 2010|url-status = dead|archive-url=https://web.archive.org/web/20120717021314/http://www.center4research.org/news-events/previous-foremother-awards/|archive-date=July 17, 2012}}</ref> gave Grassley the Health Policy Hero award for his 2004 oversight of legislative reforms and accountability of the [[Food and Drug Administration (United States)|United States Food and Drug Administration]] (FDA).<ref>{{cite press release|url=https://grassley.senate.gov/news/Article.cfm?customel_dataPageID_1502=20654|title=Grassley recognized for work to increase accountability in health care system|website=grassley.senate.gov|date=May 8, 2009|url-status = dead|archive-url=https://web.archive.org/web/20091007141224/http://www.grassley.senate.gov/news/Article.cfm?customel_dataPageID_1502=20654|archive-date=October 7, 2009}}</ref> In 2010, [[The Hill (newspaper)|''The Hill'']] named Grassley and [[Max Baucus]] the hardest-working members of Congress.<ref>{{cite web|last=Victoria|first=Lauren|url=https://thehill.com/capital-living/162923-the-25-hardest-working-lawmakers/|title=The 25 hardest working lawmakers|work=[[The Hill (newspaper)|The Hill]]|date=June 9, 2010|access-date=August 23, 2010|url-status = live|archive-url=https://web.archive.org/web/20100616091806/http://thehill.com/capital-living/102101-the-25-hardest-working-members-of-congress|archive-date=June 16, 2010}}</ref>

=== Health ===

In December 1973, Grassley fell while running, causing a painful bone cyst to grow on his knee.<ref name= "Hospital">{{Cite news|date=May 5, 1974|title=Grassley in hospital|page=14|url=https://www.newspapers.com/article/the-courier-surgery/179080001/|access-date=August 18, 2025 |publisher=[[The Waterloo-Cedar Falls Courier]]}}</ref> He went to University of Iowa Hospital in May 1974 and had surgery to remove it.<ref name= "Hospital"/> During the surgery, doctors found a benign tumor in his shin, which was also removed.<ref>{{Cite news|date=May 7, 1974|title=Not Malignant|page=3|url=https://www.newspapers.com/article/the-gazette-tumor/179080057/|access-date=August 18, 2025 |publisher=[[The Gazette (Cedar Rapids, Iowa)|The Gazette]]}}</ref> He was released after almost two weeks in the hospital.<ref>{{Cite news|date=May 17, 1974|title=Grassley|page=3|url=https://www.newspapers.com/article/the-courier-released/179079971/|access-date=August 18, 2025 |publisher=[[The Waterloo-Cedar Falls Courier]]}}</ref>

In May 1980, Grassley was involved in a car crash in [[Cedar Rapids, Iowa|Cedar Rapids]], in a car driven by an aide, resulting in Grassley's bruising his knees.<ref>{{Cite news|date=May 16, 1980|title=Bruised knees only injury|page=35|url=https://www.newspapers.com/article/the-gazette-car-crash/179079990/|access-date=August 18, 2025 |publisher=[[The Gazette (Cedar Rapids, Iowa)|The Gazette]]}}</ref>

On June 22, 1985, Grassley and his wife, Barbara, were involved in a plane crash.<ref name= "planecrash">{{Cite news|date=June 24, 1985|title=Senator not injured in forced landing|page=3|url=https://www.newspapers.com/article/the-des-moines-register-plane-crash/179079983/|access-date=August 18, 2025 |publisher=[[The Des Moines Register]]}}</ref> The plane, piloted by Irv Linder, took off from Fort Madison Municipal Airport and had to land in an oatfield just beyond the airport due to an faulty fuel pump.<ref name= "planecrash"/> No injuries were reported.<ref name= "planecrash"/> He was in [[Fort Madison, Iowa|Fort Madison]] for a fundraiser. Grassley then drove to [[Keokuk, Iowa|Keokuk]].<ref name= "planecrash"/>

In November 2020, Grassley tested positive for [[COVID-19]] and began a quarantine.<ref>{{Cite news |date=November 17, 2020 |title=Grassley Tests Positive for COVID-19|url=https://www.grassley.senate.gov/news/news-releases/grassley-tests-positive-covid-19|access-date=August 17, 2025|website=grassley.senate.gov}}</ref><ref>{{Cite news|date=November 17, 2020 |title=Chuck Grassley: Senior Republican senator gets coronavirus|url=https://www.bbc.com/news/world-us-canada-54982359|access-date=August 17, 2025 |publisher=[[BBC]]}}</ref> He returned to work on November 30.<ref>{{Cite news|last=Janfaza|first=Rachel |date=November 30, 2020 |title=Grassley returns to Senate office after testing positive for Covid-19|url=https://www.cnn.com/2020/11/30/politics/chuck-grassley-coronavirus|access-date=August 17, 2025|publisher=[[CNN]]}}</ref><ref>{{Cite news|last=Pramuk|first=John|date=November 30, 2020 |title=Sen. Chuck Grassley returns to work after positive coronavirus test and quarantine|url=https://www.cnbc.com/2020/11/30/chuck-grassley-returns-to-congress-after-positive-coronavirus-test.html|access-date=August 17, 2025 |publisher=[[CNBC]]}}</ref>

In 2023, Grassley fell at his DC town home. On January 11, he underwent surgery to fix a hip fracture. On February 1, he returned to the Senate, using a wheelchair.<ref>{{Cite news |date=January 10, 2023|title= Statement from the Office of Sen. Grassley |url=https://www.grassley.senate.gov/news/news-releases/statement-from-the-office-of-sen-grassley |access-date=January 24, 2025 |website=grassley.senate.gov}}</ref><ref>{{Cite news |date=February 1, 2023 |title= Iowa's Chuck Grassley back to work in a wheelchair following hip surgery |url= https://www.thegazette.com/government-politics/iowas-chuck-grassley-back-to-work-in-a-wheelchair-following-hip-surgery/ |access-date=January 24, 2025 |website=[[The Gazette (Cedar Rapids, Iowa)|The Gazette]]}}</ref>

Grassley was hospitalized for an infection on January 16, 2024, and released on January 18.<ref>{{Cite news |date=January 16, 2024 |title= Chuck Grassley, 90-year-old US senator from Iowa, hospitalized with infection |url=https://www.cnn.com/2024/01/16/politics/chuck-grassley-hospitalized-with-infection/index.html |access-date=January 24, 2025 |website=[[CNN]]}}</ref><ref>{{Cite news |date=January 16, 2024 |title= Oldest US Senator Chuck Grassley admitted to hospital over infection|url=https://www.cnn.com/2024/01/16/politics/chuck-grassley-hospitalized-with-infection/index.html |access-date=January 24, 2025 |website=[[BBC]]}}</ref><ref>{{Cite news |date=January 18, 2024 |title= Grassley released from hospital|url=https://www.politico.com/news/2024/01/18/chuck-grassley-hospital-00136536|access-date=January 24, 2025 |website=[[Politico]]}}</ref><ref>{{Cite news |date=January 18, 2024 |title=Statement from the Office of Sen. Grassley|url=https://www.grassley.senate.gov/news/news-releases/statement-from-the-office-of-sen-grassley |access-date=January 24, 2025 |website=grassley.senate.gov}}</ref>

=== Farm ===

In 1926, Grassley's father, Louis, bought an 80-acre farm in [[Butler County, Iowa|Butler County]].<ref name= "AG2024"/> During the [[Great Depression]], he had the option to buy an additional 80 acres for $2,000,<ref name= "AG2024"/> but decided against it as he was struggling to make ends meet.<ref name= "AG2024"/> By 2018, his family had grown the farm to 750 acres. Grassley farms corn and soybeans with his son Robin and grandson [[Patrick Grassley|Pat]].<ref>{{cite web|url=https://rollcall.com/2018/10/04/sen-chuck-grassley-defends-personally-taking-trumps-farm-bailout/|title=Sen. Chuck Grassley Defends Personally Taking Trump's Farm Bailout|publisher= Rollcall |date= October 4, 2018|access-date=August 17, 2025}}</ref>

According to [[OpenSecrets]], Grassley's net worth was more than $7.5 million as of 2018.<ref name="net-worth">{{cite web |title=Chuck Grassley - Net Worth - Personal Finances |url=https://www.opensecrets.org/personal-finances/chuck-grassley/net-worth?cid=N00001758&year=2018 |website=OpenSecrets.org |access-date=15 November 2021}}</ref>

== Electoral history ==

=== 2020s ===

{{Election box begin
| title = [[2022 United States Senate election in Iowa]]<ref name= "22gen">{{Cite web |title=United States Senate election in Iowa, 2022 |url=https://sos.iowa.gov/elections/pdf/2022/general/canvsummary.pdf|access-date=August 18, 2025 |publisher=[[Iowa Secretary of State]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley ([[incumbent|inc.]])
| party = Republican Party (United States)
| votes = 681,507
| percentage = 56.0%
| change = -4.09%
}}
{{Election box candidate with party link
| candidate = Michael Franken
| party = Democratic Party (United States)
| votes = 533,717
| percentage = 43.9%
| change = +8.24%
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Main|2022 United States Senate election in Iowa}}

In May 2021, Grassley said he would not decide whether to run for reelection in 2022 until between eight and 12 months before the election.<ref>{{Cite web |title=Chuck Grassley is the 80-something everyone's waiting on |url=https://www.politico.com/news/2021/05/10/chuck-grassley-2022-485648 |website=[[Politico]]|date=May 10, 2021 }}</ref> Many believed that an open seat in Iowa would benefit the Democrats as they could convince many Grassley supporters to vote for their nominee. In July 2021, former U.S. representative [[Abby Finkenauer]] announced that she would run for the seat regardless of Grassley's decision and criticized him and Republican Senate leader [[Mitch McConnell]] for being "obsessed with power" and not taking a strong stance against those who breached the Capitol in the [[January 6 United States Capitol attack]].<ref>{{Cite news |last=Thrush |first=Glenn |date=July 22, 2021 |title=A young Democrat challenges Grassley for Iowa Senate seat, citing his failure to confront the Jan. 6 rioters. |work=[[The New York Times]] |url=https://www.nytimes.com/2021/07/22/us/politics/abby-finkenauer-charles-grassley-iowa.html |url-access=limited |archive-url=https://ghostarchive.org/archive/20211228/https://www.nytimes.com/2021/07/22/us/politics/abby-finkenauer-charles-grassley-iowa.html |archive-date=2021-12-28 |via=NYTimes.com}}{{cbignore}}</ref><ref>{{cite tweet|number=1418194238039339010|user=Abby4Iowa|title=I'm Abby Finkenauer, and I'm running...|date=July 22, 2021}}</ref>

In September 2021, Grassley announced his candidacy for an eighth term.<ref>{{Cite web |author=Karl de Vries |title=Longtime Iowa Sen. Chuck Grassley is running for reelection |url=https://www.cnn.com/2021/09/24/politics/chuck-grassley-reelection/index.html |access-date=2021-09-24 |website=[[CNN]]|date=September 24, 2021 }}</ref> His announcement was viewed as advantageous to Republicans seeking to hold Grassley's seat and retake the Senate majority in 2022.<ref>{{Cite web |last=Everett |first=Burgess |title=Grassley will seek reelection, boosting GOP's majority hopes |url=https://www.politico.com/news/2021/09/24/chuck-grassley-2022-elections-iowa-514090 |website=[[Politico]]|date=September 24, 2021 }}</ref> He won [[2022 United States Senate election in Iowa|the general election]], defeating Democratic nominee [[Michael Franken]] on November 8, 2022.<ref name= "22gen"/>

{{Election box begin | title=[[2022 United States Senate election in Iowa]], Republican Primary<ref name=PrimaryResults>{{cite web |title=2022 Senate Primary Election |url=https://sos.iowa.gov/elections/pdf/2022/primary/canvsummary.pdf|pages=2–11|publisher=[[Iowa Secretary of State]]|access-date= August 18, 2025}}</ref>}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley
 |votes = 139,451
 |percentage = 73.4%
 |change = +7.86%
}}
{{Election box candidate with party link|
 |party = Republican Party (United States)
 |candidate = [[Jim Carlin (politician)|Jim Carlin]]
 |votes = 50,166
 |percentage = 26.4%
 |change =
}}
{{Election box candidate with party link|
 |party =
 |candidate = Write in
 |votes = 307
 |percentage = 0.2%
 |change =
}}
{{Election box turnout|
 |votes = 190,014
 |percentage = 100%
 |change =
}}
{{Election box end}}

=== 2010s ===

{{Main|2016 United States Senate election in Iowa}}

[[File:Chuck Grassley by Gage Skidmore.jpg|right|thumb|Grassley speaking at the 2016 [[Conservative Political Action Conference]] (CPAC) in Washington, D.C.]]
Grassley sought a seventh term in the 2016 election. He was expected to face a strong challenge from former Democratic lieutenant governor [[Patty Judge]],<ref>{{cite news |last1=Steinhauer |first1=Jennifer |last2=Herszenhorn |first2=David M. |title=Charles Grassley Faces Formidable Challenger in Iowa Senate Race |work=[[The New York Times]] |date=March 3, 2016 |url=https://www.nytimes.com/2016/03/04/us/politics/charles-grassley-patty-judge-iowa-senate-race.html |url-status=live |archive-url=https://web.archive.org/web/20160304050502/http://www.nytimes.com/2016/03/04/us/politics/charles-grassley-patty-judge-iowa-senate-race.html |archive-date=March 4, 2016 |df=mdy-all}}</ref> but won his seventh term with over 60% of the vote as Republican presidential nominee [[Donald Trump]] won Iowa with over 51% of the vote.<ref>{{cite web |date=August 1, 2017 |title=Iowa Presidential Race Results: Donald J. Trump Wins |url=https://www.nytimes.com/elections/results/iowa-president-clinton-trump |url-status=live |archive-url=https://web.archive.org/web/20180104014014/https://www.nytimes.com/elections/results/iowa-president-clinton-trump |archive-date=January 4, 2018 |access-date=January 3, 2018 |website=[[The New York Times]]}}</ref>

{{Election box begin | title=[[2016 United States Senate election in Iowa]]<ref>{{cite web|url=https://sos.iowa.gov/elections/pdf/2016/general/canvsummary.pdf|title=2016 Senatorial General Election Results|publisher=[[Iowa Secretary of State]]|access-date=August 18, 2025}}</ref>
}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley ([[incumbent|inc.]])
 |votes = 926,007
 |percentage = 60.09%
 |change = -4.26%
}}
{{Election box candidate with party link|
 |party = Democratic Party (United States)
 |candidate = Patty Judge
 |votes = 549,460
 |percentage = 35.66%
 |change = +2.36%
}}
{{Election box candidate with party link|
 |party = Libertarian Party (United States)
 |candidate = Charles Aldrich
 |votes = 41,794
 |percentage = 2.71%
 |change = +0.44%
}}
{{Election box candidate with party link|
 |party = Independent
 |candidate = Jim Hennager
 |votes = 17,649
 |percentage = 1.15%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Independent
 |candidate = Michael Luick-Thrams
 |votes = 4,441
 |percentage = 0.29%
 |change = N/A
}}
{{Election box candidate|
  |party      = Write-ins
  |candidate  =
  |votes      = 1,686
  |percentage = 0.11%
  |change     = +0.03%
}}
{{Election box majority|
 |votes = 376,547
 |percentage = 24.43%
 |change = -6.62%
}}
{{Election box turnout|
 |votes = 1,541,037
 |percentage =
 |change =
}}
{{Election box hold with party link|
  |winner     = Republican Party (US)
  |loser      = Democratic Party (US)
  |swing      =
}}
{{Election box end}}

{{Main|2010 United States Senate election in Iowa}}

Grassley sought a sixth term in the 2010 election. He was challenged by Democrat [[Roxanne Conlin]] and [[Libertarian Party (United States)|Libertarian]] John Heiderscheit.<ref>[http://clerk.house.gov/member_info/electionInfo/2010election.pdf Statistics of the Congressional Election of November 2, 2010 ]</ref>

Grassley was unopposed in the Republican primary, although conservative Iowans such as Bill Salier and Craig Robinson said he had drifted "too far to the left".<ref>{{cite web |last=Hancock |first=Jason |date=April 10, 2009 |title=Salier: Grassley could be primaried |url=http://iowaindependent.com/13888/salier-grassley-could-be-primaried |url-status=dead |archive-url=https://archive.today/20120715164507/http://iowaindependent.com/13888/salier-grassley-could-be-primaried |archive-date=July 15, 2012 |access-date=August 23, 2010 |work=[[The Iowa Independent]] |df=mdy-all}}</ref>

Grassley was reelected with 718,215 votes to Conlin's 371,686. He won 98 counties, losing [[Johnson County, Iowa|Johnson County]]. Heiderscheit received 25,290 votes.

{{Election box begin | title=[[2010 United States Senate election in Iowa]]<ref>{{cite web |url=https://sos.iowa.gov/elections/pdf/2010/gensummaryorr.pdf|title=2010 US Senate general election |publisher=[[Iowa Secretary of State]]|page=1|access-date=August 18, 2025}}</ref>
}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley ([[incumbent|inc.]])
 |votes = 718,215
 |percentage = 64.35%
 |change = -5.83%
}}
{{Election box candidate with party link|
 |party = Democratic Party (United States)
 |candidate = Roxanne Conlin
 |votes = 371,686
 |percentage = 33.30%
 |change = +5.43%
}}
{{Election box candidate with party link|
 |party = Libertarian Party (United States)
 |candidate = John Heiderscheit
 |votes = 25,290
 |percentage = 2.27%
 |change = +1.24%
}}
{{Election box candidate|
  |party      = Write-ins
  |candidate  =
  |votes      = 872
  |percentage = 0.08%
  |change     = +0.05%
}}
{{Election box majority|
 |votes = 346,529
 |percentage = 31.05%
 |change = -11.26%
}}
{{Election box turnout|
 |votes = 1,116,063
 |percentage =
 |change =
}}
{{Election box hold with party link|
  |winner     = Republican Party (US)
  |loser      = Democratic Party (US)
  |swing      =
}}
{{Election box end}}

=== 2000s ===

{{Main|2004 United States Senate election in Iowa}}

Grassley was reelected in 2004, defeating former [[Iowa State Senate|state senator]] [[Arthur A. Small]].<ref>{{cite web|url=http://clerk.house.gov/member_info/electionInfo/2004election.pdf |title=MICROCOMP output file |access-date=2019-10-15}}</ref>

{{Election box begin | title=[[2004 United States Senate election in Iowa]]<ref>{{cite web |url=http://clerk.house.gov/member_info/electionInfo/2004election.pdf |title=MICROCOMP output file |website=Clerk.house.gov |access-date=March 6, 2017 |url-status = live|archive-url=https://web.archive.org/web/20170123044710/http://clerk.house.gov/member_info/electionInfo/2004election.pdf |archive-date=January 23, 2017}}</ref>
}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley ([[incumbent|inc.]])
 |votes = 1,038,175
 |percentage = 70.18%
 |change = +1.77%
}}
{{Election box candidate with party link|
 |party = Democratic Party (United States)
 |candidate = Art Small
 |votes = 412,365
 |percentage = 27.88%
 |change = -2.62%
}}
{{Election box candidate with party link|
 |party = Libertarian Party (United States)
 |candidate = Christy Ann Welty
 |votes = 15,218
 |percentage = 1.03%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Green Party (United States)
 |candidate = Daryl A. Northrop
 |votes = 11,121
 |percentage = 0.75%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Socialist Workers Party (United States)
 |candidate = Edwin Fruit
 |votes = 1,874
 |percentage = 0.13%
 |change = -0.14%
}}
{{Election box candidate|
  |party      = Write-ins
  |candidate  =
  |votes      = 475
  |percentage = 0.03%
  |change     = 0%
}}
{{Election box majority|
 |votes = 625,810
 |percentage = 42.31%
 |change = +4.39%
}}
{{Election box turnout|
 |votes = 1,479,228
 |percentage =
 |change =
}}
{{Election box hold with party link|
  |winner     = Republican Party (US)
  |loser      = Democratic Party (US)
  |swing      =
}}
{{Election box end}}

=== 1990s ===

{{Main|1998 United States Senate election in Iowa}}

Grassley was reelected in 1998, defeating former [[Iowa House of Representatives|state representative]] [[David Osterberg]], who won the Democratic nomination unopposed. He won all 99 counties.<ref>{{Cite web |title=Iowa Sen. Grassley to seek seventh term |url=https://www.thegazette.com/campaigns-elections/iowa-sen-grassley-to-seek-seventh-term/ |website=www.thegazette.com}}</ref>

{{Election box begin | title=[[1998 United States Senate election in Iowa]]<ref>{{cite web |url=http://clerk.house.gov/member_info/electionInfo/1998election.pdf |title=STATISTICS OF THE CONGRESSIONAL ELECTION OF NOVEMBER 3, 1998 |website=Clerk.house.gov |access-date=March 6, 2017 |url-status = live|archive-url=https://web.archive.org/web/20170123044640/http://clerk.house.gov/member_info/electionInfo/1998election.pdf |archive-date=January 23, 2017}}</ref>
}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley ([[incumbent|inc.]])
 |votes = 648,480
 |percentage = 68.41%
 |change = -1.20%
}}
{{Election box candidate with party link|
 |party = Democratic Party (United States)
 |candidate = David Osterberg
 |votes = 289,049
 |percentage = 30.49%
 |change = +3.29%
}}
{{Election box candidate with party link|
 |party = Natural Law Party (United States)
 |candidate = Susan Marcus
 |votes = 7,561
 |percentage = 0.80%
 |change = -0.47%
}}
{{Election box candidate with party link|
 |party = Socialist Workers Party (United States)
 |candidate = Margaret Trowe
 |votes = 2,542
 |percentage = 0.27%
 |change = +0.16%
}}
{{Election box candidate|
  |party      = Write-ins
  |candidate  =
  |votes      = 275
  |percentage = 0.03%
  |change     = +0.01%
}}
{{Election box majority|
 |votes = 359,431
 |percentage = 37.92%
 |change = -4.50%
}}
{{Election box turnout|
 |votes = 947,907
 |percentage =
 |change =
}}
{{Election box hold with party link|
  |winner     = Republican Party (US)
  |loser      = Democratic Party (US)
  |swing      =
}}
{{Election box end}}

{{Main|1992 United States Senate election in Iowa}}

Grassley was reelected in 1992, defeating Democratic [[Iowa State Senate|state senator]] [[Jean Hall Lloyd-Jones]]. He won all 99 counties.<ref>{{Cite web |author=<!--Not stated--> |work=KTIV |date=September 24, 2021 |title=Iowa Senator Charles Grassley announces re-election campaign |url=https://ktiv.com/2021/09/24/iowa-senator-charles-grassley-announces-re-election-campaign/ |access-date=September 24, 2021 |archive-date=September 24, 2021 |archive-url=https://web.archive.org/web/20210924123650/https://ktiv.com/2021/09/24/iowa-senator-charles-grassley-announces-re-election-campaign/ |url-status=dead }}</ref>

{{Election box begin | title=[[1992 United States Senate election in Iowa]]<ref>{{cite web |url=http://clerk.house.gov/member_info/electionInfo/1992election.pdf |title=STATISTICS OF THE CONGRESSIONAL ELECTION OF NOVEMBER 3, 1992 |website=Clerk.house.gov |access-date=March 6, 2017 |url-status = live|archive-url=https://web.archive.org/web/20170123044622/http://clerk.house.gov/member_info/electionInfo/1992election.pdf |archive-date=January 23, 2017}}</ref>
}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley ([[incumbent|inc.]])
 |votes = 899,761
 |percentage = 69.61%
 |change = +3.58%
}}
{{Election box candidate with party link|
 |party = Democratic Party (United States)
 |candidate = [[Jean Hall Lloyd-Jones]]
 |votes = 351,561
 |percentage = 27.20%
 |change = -6.37%
}}
{{Election box candidate with party link|
 |party = Natural Law Party (United States)
 |candidate = Stuart Zimmerman
 |votes = 16,403
 |percentage = 1.27%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Independent (politician)
 |candidate = Sue Atkinson
 |votes = 6,277
 |percentage = 0.49%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Independent (politician)
 |candidate = Mel Boring
 |votes = 5,508
 |percentage = 0.43%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Independent (politician)
 |candidate = Rosanne Freeburg
 |votes = 4,999
 |percentage = 0.39%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Grassroots Party
 |candidate = Carl Eric Olsen
 |votes = 3,404
 |percentage = 0.26%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Independent (politician)
 |candidate = Richard O'Dell Hughes
 |votes = 2,918
 |percentage = 0.23%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Socialist Workers Party (United States)
 |candidate = Cleve Andrew Pulley
 |votes = 1,370
 |percentage = 0.11%
 |change = N/A
}}
{{Election box candidate|
  |party      = Write-ins
  |candidate  =
  |votes      = 293
  |percentage = 0.02%
  |change     = +0.01%
}}
{{Election box majority|
 |votes = 548,200
 |percentage = 42.41%
 |change = +9.95%
}}
{{Election box turnout|
 |votes = 1,292,494
 |percentage =
 |change =
}}
{{Election box hold with party link|
  |winner     = Republican Party (US)
  |loser      = Democratic Party (US)
  |swing      =
}}
{{Election box end}}

=== 1980s ===

{{Main|1986 United States Senate election in Iowa}}

Grassley was reelected in 1986, defeating the Democratic nominee, attorney John P. Roehrick. He won 98 counties, losing [[Wapello County, Iowa|Wapello County]].<ref>{{Cite news |date=August 1, 2017 |title=Iowa U.S. Senate Results: Charles E. Grassley Wins |work=[[The New York Times]] |url=https://www.nytimes.com/elections/2016/results/iowa-senate-grassley-judge |via=NYTimes.com}}</ref>

{{Election box begin | title=[[1986 United States Senate election in Iowa]]<ref>{{cite web |url=http://clerk.house.gov/member_info/electionInfo/1986election.pdf |title=STATISTICS OF THE CONGRESSIONAL ELECTION OF NOVEMBER 4, 1986 |website=Clerk.house.gov |access-date=March 6, 2017 |url-status = live|archive-url=https://web.archive.org/web/20170123044610/http://clerk.house.gov/member_info/electionInfo/1986election.pdf |archive-date=January 23, 2017}}</ref>
}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley ([[incumbent|inc.]])
 |votes = 588,880
 |percentage = 66.04%
 |change = +12.55%
}}
{{Election box candidate with party link|
 |party = Democratic Party (United States)
 |candidate = John P. Roehrick
 |votes = 299,406
 |percentage = 33.57%
 |change = -11.97%
}}
{{Election box candidate with party link|
 |party = Independent (politician)
 |candidate = John Masters
 |votes = 3,370
 |percentage = 0.38%
 |change = N/A
}}
{{Election box candidate|
  |party      = Write-ins
  |candidate  =
  |votes      = 106
  |percentage = 0.01%
  |change     = +0.01%
}}
{{Election box majority|
 |votes = 289,474
 |percentage = 32.46%
 |change = +24.51%
}}
{{Election box turnout|
 |votes = 891,762
 |percentage =
 |change =
}}
{{Election box hold with party link|
  |winner     = Republican Party (US)
  |loser      = Democratic Party (US)
  |swing      =
}}
{{Election box end}}

{{Main|1980 United States Senate election in Iowa}}

Grassley was first elected to the Senate in 1980, defeating Democratic incumbent [[John Culver]].<ref>{{Cite web |last=Rodriguez |first=Barbara |title=John Culver, former U.S. senator and father of Chet Culver, dies at 86 |url=https://www.desmoinesregister.com/story/news/politics/2018/12/27/former-democratic-senator-john-culver-dies-86-chet-congressman-iowa-governor-public-policy-simpson/2423252002/ |website=[[Des Moines Register]]}}</ref>

{{Election box begin | title=[[1980 United States Senate election in Iowa]]<ref>{{cite web |url=http://clerk.house.gov/member_info/electionInfo/1980election.pdf |title=STATISTICS OF THE CONGRESSIONAL ELECTION OF NOVEMBER 4, 1980 |website=Clerk.house.gov |access-date=March 6, 2017 |url-status = live|archive-url=https://web.archive.org/web/20170123044615/http://clerk.house.gov/member_info/electionInfo/1980election.pdf |archive-date=January 23, 2017}}</ref>
}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley
 |votes = 683,014
 |percentage = 53.49%
 |change = +4.21%
}}
{{Election box candidate with party link|
 |party = Democratic Party (United States)
 |candidate = [[John Culver]] ([[incumbent|inc.]])
 |votes = 581,545
 |percentage = 45.54%
 |change = -4.48%
}}
{{Election box candidate with party link|
 |party = Independent (politician)
 |candidate = Garry De Young
 |votes = 5,858
 |percentage = 0.46%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Libertarian Party (United States)
 |candidate = Robert V. Hengerer
 |votes = 4,233
 |percentage = 0.33%
 |change = N/A
}}
{{Election box candidate with party link|
 |party = Independent (politician)
 |candidate = John Ingram Henderson
 |votes = 2,336
 |percentage = 0.18%
 |change = N/A
}}
{{Election box candidate|
  |party      = Write-ins
  |candidate  =
  |votes      = 48
  |percentage = 0.00%
  |change     = +0%
}}

{{Election box majority|
 |votes = 101,469
 |percentage = 7.95%
 |change = +7.20%
}}
{{Election box turnout|
 |votes = 1,772,983
 |percentage =
 |change =
}}
{{Election box gain with party link|
  |winner     = Republican Party (US)
  |loser      = Democratic Party (US)
  |swing      =
}}
{{Election box end}}

{{Election box begin | title=[[1980 United States Senate election in Iowa]], Republican Primary <ref>{{cite web |last1=Synhorst |first1=Melvin |title=SUMMARY OF OFFICIAL CANVASS OF VOTES CAST IN IOWA PRIMARY ELECTION JUNE 3, 1980 |url=http://sos.iowa.gov/elections/pdf/results/80s/1980primcanv.pdf |website=Iowa Secretary of State |publisher=State of Iowa |access-date=20 May 2022}}</ref>}}
{{Election box winning candidate with party link|
 |party = Republican Party (United States)
 |candidate = Chuck Grassley
 |votes = 170,120
 |percentage = 65.54%
 |change = 
}}
{{Election box candidate with party link|
 |party = Republican Party (United States)
 |candidate = Tom Stoner
 |votes = 89,409
 |percentage = 34.45%
 |change =
}}
{{Election box turnout|
 |votes = 259,529
 |percentage = 100%
 |change =
}}
{{Election box end}}

=== 1970s ===
{{Election box begin
| title = 1978 US House primary election for Iowa's 3rd district <ref>{{Cite web |title=1978 US House primary election for Iowa's 3rd district |url=https://sos.iowa.gov/elections/pdf/results/70s/1978primcanv.pdf|page=4|access-date=August 18, 2025|publisher= [[Iowa Secretary of State]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley ([[incumbent|inc.]])
| party = Republican Party (United States)
| votes = 26,706
| percentage = 100%
| change = 
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1978 US House general election for Iowa's 3rd district <ref>{{Cite web |title=1978 US House general election for Iowa's 3rd district |url=https://sos.iowa.gov/elections/pdf/results/70s/1978gencanv.pdf|page=9|access-date=August 18, 2025|publisher= [[Iowa Secretary of State]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley ([[incumbent|inc.]])
| party = Republican Party (United States)
| votes = 103,659
| percentage = 74.80%
| change = 
}}
{{Election box candidate with party link
| candidate = John Knudson
| party = Democratic Party (United States)
| votes = 34,880
| percentage = 25.17%
| change = 
}}
{{Election box candidate with party link
| candidate = Scattering
| party = 
| votes = 39
| percentage = 0.03%
| change = 
}}
{{Election box turnout|
 |votes = 138,578
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1976 US House primary election for Iowa's 3rd district <ref>{{Cite web |title=1976 US House primary election for Iowa's 3rd district |url=https://sos.iowa.gov/elections/pdf/results/70s/1976primcanv.pdf|page=3|access-date=August 18, 2025|publisher= [[Iowa Secretary of State]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley ([[incumbent|inc.]])
| party = Republican Party (United States)
| votes = 23,076
| percentage = 100%
| change = 
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1976 US House general election for Iowa's 3rd district <ref>{{Cite web |title=1976 US House general election for Iowa's 3rd district |url=https://sos.iowa.gov/elections/pdf/results/70s/1976gencanv.pdf|page=5|access-date=August 18, 2025|publisher= [[Iowa Secretary of State]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley ([[incumbent|inc.]])
| party = Republican Party (United States)
| votes = 117,957
| percentage = 56.46%
| change = 
}}
{{Election box candidate with party link
| candidate = Stephen Rapp
| party = Democratic Party (United States)
| votes = 90,981
| percentage = 43.54%
| change = 
}}
{{Election box candidate with party link
| candidate = Scattering
| party = 
| votes = 5
| percentage = 0.002%
| change = 
}}
{{Election box turnout|
 |votes = 208,943
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1974 US House primary election for Iowa's 3rd district <ref>{{Cite web |title=1974 US House primary election for Iowa's 3rd district |url=https://sos.iowa.gov/elections/pdf/results/70s/1974primcanv.pdf|page=4|access-date=August 18, 2025|publisher= [[Iowa Secretary of State]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley 
| party = Republican Party (United States)
| votes = 13,495
| percentage = 42.02%
| change = 
}}
{{Election box candidate with party link
| candidate = Robert E. Case
| party = Republican Party (United States)
| votes = 9,044
| percentage = 28.16%
| change = 
}}
{{Election box candidate with party link
| candidate = Charlene Conklin
| party = Republican Party (United States)
| votes = 6,043
| percentage = 18.81%
| change = 
}}
{{Election box candidate with party link
| candidate = Bart Schwieger
| party = Republican Party (United States)
| votes = 2,123
| percentage = 6.61%
| change = 
}}
{{Election box candidate with party link
| candidate = John Williams
| party = Republican Party (United States)
| votes = 1,412
| percentage = 4.40%
| change = 
}}
{{Election box turnout|
 |votes = 32,117
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1974 US House general election for Iowa's 3rd district <ref>{{Cite web |title=1974 US House general election for Iowa's 3rd district |url=https://sos.iowa.gov/elections/pdf/results/70s/1974gencanv.pdf|page=4|access-date=August 18, 2025|publisher= [[Iowa Secretary of State]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley 
| party = Republican Party (United States)
| votes = 77,468
| percentage = 50.85%
| change = 
}}
{{Election box candidate with party link
| candidate = Stephen Rapp
| party = Democratic Party (United States)
| votes = 74,895
| percentage = 49.15%
| change = 
}}
{{Election box turnout|
 |votes = 152,363
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1972 Iowa House, District 37 primary election<ref>{{Cite web |title=1972 Iowa House 37th district primary election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860913.pdf|page=158|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 2,537
| percentage = 76.48%
| change = 
}}
{{Election box candidate with party link
| candidate = Luvern W. Kehe
| party = Republican Party (United States)
| votes = 780
| percentage = 23.52%
| change = 
}}
{{Election box turnout|
 |votes = 3,317
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1972 Iowa House, District 37 general election<ref>{{Cite web |title=1972 Iowa House, District 37 general election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860913.pdf|page=177|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley 
| party = Republican Party (United States)
| votes = 7,846
| percentage = 70.77%
| change = 
}}
{{Election box candidate with party link
| candidate = Tim Youngblood
| party = Democratic Party (United States)
| votes = 3,241
| percentage = 29.23%
| change = 
}}
{{Election box turnout|
 |votes = 11,087
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin| title = 1970 Iowa House, District 10 primary election<ref>{{Cite web |title=1970 Iowa House 10th district primary election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860912.pdf|page=158|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>}}

{{Election box winning candidate with party link
| candidate = Chuck Grassley 
| party = Republican Party (United States)
| votes = 1,842
| percentage = 100%
| change =
}}
{{Election box turnout|
 |votes = 1,842
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1970 Iowa House, District 10 general election<ref>{{Cite web |title=1970 Iowa House, District 10 general election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860912.pdf|page=170|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 3,672
| percentage = 62.65%
| change = 
}}
{{Election box candidate with party link
| candidate = Robin K. Howell
| party = Democratic Party (United States)
| votes = 2,123
| percentage = 36.22%
| change = 
}}
{{Election box candidate with party link
| candidate = Celene Eliason
| party = Independent Party (United States)
| votes = 66
| percentage = 1.13%
| change = 
}}
{{Election box turnout|
 |votes = 5,861
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

=== 1960s ===

{{Election box begin
| title = 1968 Iowa House, District 73 primary election<ref>{{Cite web |title=1968 Iowa House 73rd district primary election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860911.pdf|page=346|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 1,507
| percentage = 100%
| change = 
}}
{{Election box turnout|
 |votes = 1,507
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1968 Iowa House, District 73 general election<ref>{{Cite web |title=1968 Iowa House, District 73 general election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860911.pdf|page=368|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 4,865
| percentage = 100%
| change = 
}}
{{Election box turnout|
 |votes = 4,865
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1966 Iowa House, District 73 primary election<ref>{{Cite web |title=1966 Iowa House 73rd district primary election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860910.pdf|page=406|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 1,002
| percentage = 100%
| change = 
}}
{{Election box turnout|
 |votes = 1,002
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1966 Iowa House, District 73 general election<ref>{{Cite web |title=1966 Iowa House, District 73 general election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860910.pdf|page=429|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 3,445
| percentage = 69.23%
| change = 
}}
{{Election box winning candidate with party link
| candidate = Floyd J. Ramker
| party = Democratic Party (United States)
| votes = 1,531
| percentage = 30.77%
| change = 
}}
{{Election box turnout|
 |votes = 4,976
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1964 Iowa House, District 73 primary election<ref>{{Cite web |title=1964 Iowa House 73rd district primary election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860909.pdf|page=395|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 1,593
| percentage = 100%
| change = 
}}
{{Election box turnout|
 |votes = 1,593
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1964 Iowa House, District 73 general election<ref>{{Cite web |title=1964 Iowa House, District 73 general election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860909.pdf|page=414|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 3,884
| percentage = 60.85%
| change = 
}}
{{Election box winning candidate with party link
| candidate = Beverly Moffitt
| party = Democratic Party (United States)
| votes = 2,498
| percentage = 39.15%
| change = 
}}
{{Election box turnout|
 |votes = 6,382
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1962 Iowa House, District 73 primary election<ref>{{Cite web |title=1962 Iowa House 73rd district primary election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860908.pdf|page=372|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 1,357
| percentage = 100%
| change = 
}}
{{Election box turnout|
 |votes = 1,593
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1962 Iowa House, District 73 general election<ref>{{Cite web |title=1962 Iowa House, District 73 general election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860908.pdf|page=388|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 3,017
| percentage = 64.35%
| change = 
}}
{{Election box winning candidate with party link
| candidate = Vernon Garner
| party = Democratic Party (United States)
| votes = 1,672
| percentage = 35.65%
| change = 
}}
{{Election box turnout|
 |votes = 4,689
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1960 Iowa House, District 73 primary election<ref>{{Cite web |title=1960 Iowa House 73rd district primary election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860906.pdf|page=366|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 1,348
| percentage = 100%
| change = 
}}
{{Election box turnout|
 |votes = 1,348
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1960 Iowa House, District 73 general election<ref>{{Cite web |title=1960 Iowa House, District 73 general election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860906.pdf|page=380|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 3,021
| percentage = 64.12%
| change = 
}}
{{Election box winning candidate with party link
| candidate = Travis C. Moffitt
| party = Democratic Party (United States)
| votes = 1,690
| percentage = 35.87%
| change = 
}}
{{Election box turnout|
 |votes = 4,711
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

=== 1958 ===

{{Election box begin
| title = 1958 Iowa House, District 73 primary election<ref>{{Cite web |title=1958 Iowa House 73rd district primary election |url=https://sos.iowa.gov/elections/pdf/results/50s/1958primcanv.pdf|page=4|publisher= [[Iowa Official Register]]|access-date=August 29, 2025|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 1,704
| percentage = 100%
| change = 
}}
{{Election box turnout|
 |votes = 1,704
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

{{Election box begin
| title = 1958 Iowa House, District 73 general election<ref>{{Cite web |title=1958 Iowa House, District 73 general election |url=https://www.legis.iowa.gov/docs/publications/REDBK/860907.pdf|page=378|access-date=August 18, 2025|publisher= [[Iowa Official Register]]|language=en}}</ref>
}}
{{Election box winning candidate with party link
| candidate = Chuck Grassley
| party = Republican Party (United States)
| votes = 5,001
| percentage = 69.05%
| change = 
}}
{{Election box winning candidate with party link
| candidate = Vernon Garner
| party = Democratic Party (United States)
| votes = 2,241
| percentage = 30.94%
| change = 
}}
{{Election box turnout|
 |votes = 7,242
 |percentage = 100%
 |change =
}}
{{Election box hold with party link no swing
| winner = Republican Party (United States)
}}
{{Election box end}}

== Notes ==
{{notelist}}

== References ==
{{Reflist}}

== Further reading ==
* Eve Fairbanks, [http://www.tnr.com/article/ernest-goes-washington "Earnest Goes to Washington"], ''[[The New Republic]]'', September 10, 2007

== External links ==
{{Portal bar|Biography|Conservatism|Iowa|Politics}}
{{wikimedia}}
* [https://grassley.senate.gov/ Senator Chuck Grassley] official United States Senate site
* [http://www.grassleyforsenate.com/ Grassley for Senate]
* {{CongLinks |congbio=g000386 |votesmart=53293 |fec=S0IA00028 |congress=charles-grassley/457}}
* {{C-SPAN|1167}}

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