| Committee | Size | Subcommittees | Chair | Ranking Minority Member |
|---|---|---|---|---|
| Agriculture, Nutrition & Forestry | 20 | 4 | Saxby Chambliss (GA) | Tom Harkin (IA) |
| Appropriations | 28 | 12 | Thad Cochran (R-MS) | Robert C. Byrd (D-WV) |
| Armed Services | 24 | 6 | John Warner (R-VA) | Carl Levin (D-MI) |
| Banking, Housing, & Urban Affairs | 20 | 5 | Richard C. Shelby (R-AL) | Paul S. Sarbanes (D-MD) |
| Budget | 22 | 0 | Judd Gregg (R-NH) | Kent Conrad (D-ND) |
| Commerce, Science, & Transportation | 22 | 10 | Ted Stevens (R-AK) | Daniel K. Inouye (D-SC) |
| Energy & Natural Resources | 22 | 4 | Pete V. Domenici (R-NM) | Jeff Bingaman (D-NM) |
| Environment & Public Works | 18 | 4 | James M. Inhofe (R-OK) | James M. Jeffords (I-VT) |
| Finance | 20 | 5 | Charles E. Grassley (R-IA) | Max Baucus (D-MT) |
| Foreign Relations | 18 | 7 | Richard G. Lugar (R-IN) | Joseph R. Biden, Jr. (D-DE) |
| Health, Education, Labor, & Pensions | 20 | 4 | Mike Enzi (R-WY) | Edward M. Kennedy (D-MA) |
| Homeland Security & Governmental Affairs | 16 | 3 | Susan Collins (R-ME) | Joseph Lieberman (D-CT) |
| Judiciary | 18 | 6 | Arlen Specter (R-PA) | Patrick J. Leahy (D-VT) |
| Rules & Administration | 18 | 0 | Trent Lott (R-MS) | Christopher Dodd (D-CT) |
| Small Business | 18 | 0 | Olympia J. Snowe (R-ME) | John F. Kerry (D-MA) |
| Veterans' Affairs | 14 | 0 | Larry Craig (R-ID) | Daniel Akaka (D-HI) |