S. 4639: IRS Whistleblower Program Improvement Act
A Senate bill (S.) in the 119th U.S. Congress.
Overview
| Congress | 119th U.S. Congress (2025–2026) |
|---|---|
| Type | Senate bill (S.) |
| Originating chamber | Senate |
| Introduced | 2026-05-21 |
| Sponsor | Sen. Grassley, Chuck [R-IA] |
| Policy area | Taxation |
| Cosponsors | 3 |
| Latest action | 2026-05-21 — Read twice and referred to the Committee on Finance. |
| Last updated | 2026-06-11 |
Summary
An official summary for this measure has not been published by Congress. The full text is available on congress.gov.
Cosponsors (3)
| Name | Party / state |
|---|---|
| Ron Wyden | D OR (original cosponsor) 2026-05-21 |
| Susan M. Collins | R ME 2026-06-01 |
| Margaret Wood Hassan | D NH 2026-06-01 |
Full text & official record
The official bill text, section-by-section summary, amendments, committee reports, and the complete legislative timeline for S. 4639 are published by Congress on congress.gov.
View S. 4639 on congress.gov →
Frequently asked questions
What is S. 4639?
S. 4639 is a Senate bill (S.) introduced in the 119th U.S. Congress, originating in the Senate. Official title: IRS Whistleblower Program Improvement Act.
Where can I read the full bill text?
The full text, cosponsors, amendments, and legislative status for S. 4639 are available on congress.gov.
Bill data: congress.gov API (official congressional records).