Bob Casey
Former Pennsylvania US Senator (2007-2025)
Tom Carper
US Senator from Delaware (2001-present); former US Rep from Delaware (1983-1993)
Sherrod Brown
Democratic US Senator from Ohio (2007-present); former US Rep from Ohio (1993-2007)
Wayne Allard
Livingston Group Lobbyist & Former US Representative and Senator from Colorado
Daniel Kahikina Akaka
US Senator and Representative from Hawaii