S. 625 · 118th Congress IRS Whistleblower Program Improvement Act of 2023 StageIn committee SponsorChuck Grassley Introduced2023-03-02 Latest action2023-03-02 · Introduced in Senate Follow Summary Text Subjects Cosponsors (3) Votes (0) Actions Cosponsors (3) Benjamin Cardin Former member Senate MD Democrat Roger Wicker Current member Senate MS Republican Ron Wyden Current member Senate OR Democrat