Incumbents
- President: George W. Bush (Republican)
- Vice President: Dick Cheney (Republican)
- Chief Justice: William Rehnquist (until September 3), John Roberts (starting September 29)
- Speaker of the House of Representatives: Dennis Hastert (R-Illinois)
- Senate Majority Leader: Bill Frist (R-Tennessee)
- Congress: 108th (until January 3), 109th (starting January 3)
Read more about this topic: 2005 In The United States