Mike Crapo
US Senator from Idaho (1999-present); former US Representative (1993-1999)
Bob Corker
US Senator from Tennessee
Bob Casey
Former Pennsylvania US Senator (2007-2025)
Tom Carper
US Senator from Delaware (2001-present); former US Rep from Delaware (1983-1993)
Jim Bunning
Former Kentucky US Senator, Rep. Former pro baseball player
Sherrod Brown
Democratic US Senator from Ohio (2007-present); former US Rep from Ohio (1993-2007)
Robert Bennett
US Senator from Utah
Evan Bayh
Democratic US Senator from Indiana
Wayne Allard
Livingston Group Lobbyist & Former US Representative and Senator from Colorado
Daniel Kahikina Akaka
US Senator and Representative from Hawaii