Senate
President of the Senate: Al Gore (D), until January 20, 2001 Dick Cheney (R), from January 20, 2001
President pro tempore: Robert Byrd (D), until January 20, 2001 Strom Thurmond (R), January 20 – June 6, 2001
Robert Byrd (D), from June 6, 2001
[edit] Majority leadership
Majority Leader: Tom Daschle (D), until January 20, 2001 Trent Lott (R), January 20 – June 6, 2001
Tom Daschle (D), from June 6, 2001
Majority Whip: Harry Reid (D), until January 20, 2001 Don Nickles (R), January 20 – June 6, 2001
Harry Reid (D), from June 6, 2001
http://en.wikipedia.org/wiki/107th_United_States_Congress