Incumbents
- President: George W. Bush (Republican)
- Vice President: Dick Cheney (Republican)
- Chief Justice: William Rehnquist
- Speaker of the House of Representatives: Dennis Hastert (R-Illinois)
- Senate Majority Leader: Tom Daschle (D-South Dakota) (until January 3), Bill Frist (R-Tennessee) (starting January 3)
- Congress: 107th (until January 3), 108th (starting January 3)
Read more about this topic: 2003 In The United States