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U.S. Senator from Iowa

Chuck Grassley

Republican · Iowa

Serving since 1981, one of the longest-serving senators. Former Judiciary Committee chair. Known for government oversight, whistleblower protections, and bipartisan investigations.

Record

Long-serving conservative. Champion of whistleblower protections. Opposed to ACA. Supported 2017 Tax Cuts. Known for bipartisan oversight investigations into government waste.

Legislative Record

Recently sponsored bills (8 on record)

  • S.5161 — A bill to amend the Commodity Exchange Act to adjust the period during which amounts transferred by the Commodity Futures Trading Commission to the account for customer education initiatives and non-awards expenses shall remain available, to strengthen anti-retaliation protections for whistleblowers, to ensure whistleblowers are informed of their rights, and for other purposes. (Introduced, Jul 29, 2026)
  • S.4854 — Foster Youth Housing Opportunity Act (Introduced, Jun 23, 2026)
  • S.4746 — American Innovation and Choice Online Act (Introduced, Jun 10, 2026)
  • S.4712 — Intelligence Community Inspector General Parity Act of 2026 (Introduced, Jun 9, 2026)
  • S.3398 — Stop Sextortion Act (Introduced, Dec 9, 2025)
    Stop Sextortion Act This bill criminalizes threats to distribute child sexual abuse material to intimidate, coerce, extort, or cause substantial emotional distress. This practice is commonly referred to as sextortion . The bill also increases criminal penalties for related offenses that involve the…
  • S.3394 — SAFE Act (Introduced, Dec 9, 2025)
    Sentencing Accountability For Exploitation Act or the SAFE Act This bill directs the U.S. Sentencing Commission to review and amend its guidelines and policy statements applicable to federal criminal offenses involving the production, receipt, transport, shipment, or distribution of child sexual…
  • S.3397 — ECCHO Act (Introduced, Dec 9, 2025)
    Ending Coercion of Children and Harm Online or the ECCHO Act This bill establishes a federal framework to combat the online coercion of minors to commit harm. The bill creates new criminal offenses, expands reporting of instances involving the online coercion of minors, facilitates the prosecution…
  • S.736 — Lieutenant Osvaldo Albarati Stopping Prison Contraband Act (Introduced, Feb 26, 2025)
    Lieutenant Osvaldo Albarati Stopping Prison Contraband Act This bill increases federal criminal penalties for providing or attempting to provide a cell phone to an individual who is incarcerated at a prison.

Notable votes

  • Voted Yea on S.Res. 817 — S. Res. 817 (Resolution Agreed to, Jul 30, 2026)
  • Voted Yea on S.Res. 817 — Motion to Invoke Cloture: S. Res. 817 (Cloture Motion Agreed to, Jul 29, 2026)
  • Voted Yea on H.R. 6644 — Motion to Invoke Cloture: Motion to Concur in the House Amendment to the Senate Amendment to H.R. 6644 with an Amendment (SA 5823) (Cloture Motion Agreed to, Jun 18, 2026)
  • Voted Yea on S. 2 — S. 2, As Amended (Bill Passed, Jun 5, 2026)
  • Voted Nay on S. 2 — Cortez Masto Amdt. No. 5463 (Amendment Rejected, Jun 5, 2026)
  • Voted Nay on S. 2 — Padilla Amdt. No. 5808 (Amendment Rejected, Jun 5, 2026)
  • Voted Nay on S. 2 — Gallego Amdt. No. 5813 (Amendment Rejected, Jun 5, 2026)
  • Voted Nay on S. 2 — Peters Amdt. No. 5763 (Amendment Rejected, Jun 5, 2026)

Recently cosponsored bills (12 on record)

  • S.5185 — A bill to provide for auditing of the Pentagon. (Introduced, Jul 30, 2026)
  • S.4318 — Breast Cancer Stamp Reauthorization Act (Introduced, Jul 28, 2026)
  • S.5133 — Preventing Tax Fraud and Identity Theft Act (Introduced, Jul 27, 2026)
  • S.4952 — Protecting American Taxpayers Act (Introduced, Jul 20, 2026)
  • S.5025 — Lindsey O. Graham Sanctioning Russia Act of 2026 (Introduced, Jul 16, 2026)
  • S.2329 — Medicare Orthotics and Prosthetics Patient-Centered Care Act (Introduced, Jul 14, 2026)
  • S.4826 — SABER Act of 2026 (Introduced, Jun 18, 2026)
  • S.4446 — PRESS Act (Introduced, Jun 11, 2026)

Voting analysis

Chuck Grassley's congressional service began in the nineteen-seventies and has continued without a change of party since. He chairs the Judiciary Committee and has sponsored more bills than any other member measured on this site.

First elected in 1975, now serving across 26 terms. Chuck Grassley falls in the veteran cohort.

6.6%
Votes against the Republican majority
212
Roll calls where a party majority formed
21 of 51
Rank among Senate Republicans, most defections first

Voting down his colleagues' amendments

His departures are almost entirely votes against amendments — proposals from within his own conference that the chamber rejected and that he helped reject. He was recorded against measures offered by four different Republican colleagues across a tax bill, an appropriations package and a spending measure, and against one bill at passage.

This is the inverse of the pattern common among the conference's fiscal hardliners, who appear in these rankings for supporting amendments the leadership refuses. Grassley appears for declining to.

The 10 most recent of 14 roll calls where Chuck Grassley voted against the Senate Republican majority.
Roll callDateOutcomeTheir vote
H.R. 7148
Paul Amdt. No. 4272
On the Amendment S.Amdt. 4272 to H.R. 7148 (No short title on file) · roll call 119		Jan 30, 2026Amendment RejectedNay (party: Yea)
S. 2296
Curtis Amdt. No. 3697
On the Amendment S.Amdt. 3697 to S.Amdt. 3748 to S. 2296 (No short title on file) · roll call 119		Oct 9, 2025Amendment RejectedNay (party: Yea)
S. 2296
Scott (FL) Amdt. No. 3535
On the Amendment S.Amdt. 3535 to S.Amdt. 3748 to S. 2296 (No short title on file) · roll call 119		Oct 9, 2025Amendment RejectedNay (party: Yea)
H.R. 1968
Paul Amdt. No. 1266
On the Amendment S.Amdt. 1266 to H.R. 1968 (No short title on file) · roll call 119		Mar 14, 2025Amendment RejectedNay (party: Yea)
H.R. 82
On Passage of the Bill H.R. 82 · roll call 118		Dec 21, 2024Bill PassedNay (party: Yea)
H.R. 7888
Lee Amdt No. 1840
On the Amendment S.Amdt. 1840 to H.R. 7888 (No short title on file) · roll call 118		Apr 19, 2024Amendment RejectedYea (party: Nay)
H.R. 7888
Marshall Amdt No. 1834
On the Amendment S.Amdt. 1834 to H.R. 7888 (No short title on file) · roll call 118		Apr 19, 2024Amendment RejectedYea (party: Nay)
H.R. 4366
Motion to Invoke Cloture on the Motion to Concur in the House Amendment to the Senate Amendment to H.R. 4366
On the Cloture Motion H.R. 4366 · roll call 118		Mar 8, 2024Cloture Motion Agreed toYea (party: Nay)
H.R. 815
H.R. 815, as Amended
On Passage of the Bill H.R. 815 · roll call 118		Feb 13, 2024Bill PassedYea (party: Nay)
H.R. 815
Motion to Invoke Cloture Re: H.R. 815
On the Cloture Motion H.R. 815 · roll call 118		Feb 12, 2024Cloture Motion Agreed toYea (party: Nay)

Both Iowa seats

Iowa returns two Republican senators, so this compares him against a single colleague. He departs slightly more often.

Among the 2 Republicans in the Iowa delegation, the average rate of voting against the party majority is 6.3%. Chuck Grassley is above that average at 6.6%.

What he legislates on

The Judiciary chairmanship sits alongside a finance subcommittee gavel covering social security and pensions and senior standing on the budget committee. His displayed filing is characteristically technical: an amendment to the Commodity Exchange Act adjusting how long transferred funds remain available for customer education, strengthening anti-retaliation protections for whistleblowers — the subject he has worked longest.

Sponsored bills carry the Congressional Research Service's own subject classification. Chuck Grassley's cluster into: Armed Forces and National Security (1), Commerce (1), Families (1).

2490
Bills sponsored
7583
Bills cosponsored

Of the 8 most recent of those, 8 currently sit at Introduced.

Attendance

He is present for the large majority of recorded votes.

3.6%
Roll calls recorded as not voting
220
Roll calls eligible to vote on
8
Recorded as not voting

By the numbers

In the 119th Congress, Chuck Grassley has 2490 bills sponsored, 7583 cosponsored, 8 recent floor votes recorded.

Committee assignments

  • Joint Committee on Taxation
  • Senate Committee on Agriculture, Nutrition, and Forestry
  • Senate Committee on Finance
  • Senate Committee on the Budget (Senior member)
  • Senate Committee on the Judiciary (Chairman)
  • United States Senate Caucus on International Narcotics Control
  • Senate Committee on Agriculture, Nutrition, and Forestry: Commodities, Derivatives, Risk Management, and Trade
  • Senate Committee on Agriculture, Nutrition, and Forestry: Food and Nutrition, Specialty Crops, Organics, and Research
  • Senate Committee on Agriculture, Nutrition, and Forestry: Rural Development, Energy, and Credit
  • Senate Committee on Finance: International Trade, Customs, and Global Competitiveness
  • Senate Committee on Finance: Social Security, Pensions, and Family Policy (Chairman)
  • Senate Committee on Finance: Taxation and IRS Oversight

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