| | US-Secretary of the Interior
Dirk Kempthorne | Republican | N |
| AK | Sr | Senator
Ted Stevens | Republican | N |
| AL | Jr | Senator
Jefferson B. 'Jeff' Sessions | Republican | N |
| AL | Sr | Senator
Richard C. Shelby | Republican | N |
| AZ | Jr | Senator
Jon Kyl | Republican | N |
| AZ | Sr | Senator
John S. McCain | Republican | N |
| CA | Sr | Senator
Dianne Feinstein | Democrat | N |
| CA | Jr | Senator
Barbara Boxer | Democrat | N |
| CO | Sr | Senator
Wayne A. Allard | Republican | N |
| CT | Jr | Senator
Joseph I. Lieberman | Democrat | N |
| CT | Sr | Senator
Christopher J. Dodd | Democrat | N |
| DE | Sr | Senator
Joseph R. Biden | Democrat | N |
| HI | Sr | Senator
Daniel K. Inouye | Democrat | NV |
| HI | Jr | Senator
Daniel Kahikina Akaka | Democrat | N |
| IA | Jr | Senator
Thomas 'Tom' Harkin | Democrat | Y |
| IA | Sr | Senator
Charles E. 'Chuck' Grassley | Republican | N |
| ID | Sr | Senator
Larry E. Craig | Republican | N |
| IL | Sr | Senator
Richard J. 'Dick' Durbin | Democrat | Y |
| IN | Sr | Senator
Richard G. Lugar | Republican | Y |
| KS | Jr | Senator
Pat Roberts | Republican | N |
| KS | Sr | Senator
Samuel D. 'Sam' Brownback | Republican | N |
| KY | Sr | Senator
Mitch McConnell | Republican | N |
| LA | Sr | Senator
Mary L. Landrieu | Democrat | N |
| MA | Jr | Senator
John Forbes Kerry | Democrat | N |
| MA | Sr | Senator
Edward M. 'Ted' Kennedy | Democrat | Y |
| MD | Sr | Senator
Barbara A. Mikulski | Democrat | N |
| ME | Jr | Senator
Susan M. Collins | Republican | Y |
| ME | Sr | Senator
Olympia J. Snowe | Republican | Y |
| MI | Sr | Senator
Carl Levin | Democrat | Y |
| MO | Sr | Senator
Christopher S. 'Kit' Bond | Republican | N |
| MS | Sr | Senator
Thad Cochran | Republican | N |
| MT | Sr | Senator
Max S. Baucus | Democrat | Y |
| ND | Jr | Senator
Byron L. Dorgan | Democrat-NPL | Y |
| ND | Sr | Senator
Kent Conrad | Democratic-NPL | Y |
| NE | Sr | Senator
Charles T. 'Chuck' Hagel | Republican | N |
| NH | Sr | Senator
Judd A. Gregg | Republican | N |
| NJ | Sr | Senator
Frank R. Lautenberg | Democrat | Y |
| NM | Jr | Senator
Jeff Bingaman | Democrat | N |
| NM | Sr | Senator
Pete V. Domenici | Republican | N |
| NV | Sr | Senator
Harry M. Reid | Democrat | N |
| OK | Sr | Senator
James M. 'Jim' Inhofe | Republican | N |
| OR | Sr | Senator
Ron Wyden | Democrat | Y |
| OR | Jr | Senator
Gordon Harold Smith | Republican | N |
| PA | Sr | Senator
Arlen Specter | Republican | Y |
| RI | Sr | Senator
John F. 'Jack' Reed | Democrat | Y |
| SD | Sr | Senator
Tim P. Johnson | Democrat | Y |
| TX | Sr | Senator
Kay Bailey Hutchison | Republican | N |
| UT | Jr | Senator
Robert F. Bennett | Republican | N |
| UT | Sr | Senator
Orrin G. Hatch | Republican | N |
| VA | Sr | Senator
John W. Warner | Republican | Y |
| VT | Sr | Senator
Patrick J. Leahy | Democrat | Y |
| WA | Sr | Senator
Patty Murray | Democrat | N |
| WI | Jr | Senator
Russell D. Feingold | Democrat | Y |
| WI | Sr | Senator
Herbert H. 'Herb' Kohl | Democrat | Y |
| WV | Jr | Senator
John D. 'Jay' Rockefeller | Democrat | N |
| WV | Sr | Senator
Robert C. Byrd | Democrat | Y |
| WY | Jr | Senator
Michael B. Enzi | Republican | N |
| WY | Sr | Senator
Craig Thomas | Republican | Y |
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