Patrick Leahy
US Senator from Vermont
Amy Klobuchar
US Senator from Minnesota, 2020 Democratic presidential primary candidate
Tom Harkin
former US Senator and Representative from Iowa
Chuck Grassley
US Senator and Representative from Iowa (1981-present); former US Representative (1975-1981)
Lindsey Graham
US Senator from South Carolina (2003-present); former US Representative (1995-2003)
Mike Crapo
US Senator from Idaho (1999-present); former US Representative (1993-1999)
William Thad Cochran
Republican US Senator and Former Representative from Mississippi
Saxby Chambliss
Republican US Senator and Representative from Georgia
Bob Casey
Former Pennsylvania US Senator (2007-2025)
Sherrod Brown
Democratic US Senator from Ohio (2007-present); former US Rep from Ohio (1993-2007)