Barbara Boxer
Former US Senator and Representative from California
John McCain
US Senator and Representative from Arizona
George W Bush
43rd US president, ex-governor of Texas, son of George H W Bush
Jeanne Shaheen
US Senator from New Hampshire (2009-present)
Richard H Bryan
US Senator from Nevada
John Kerry
68th US Secretary of State, Senator from Massachusetts
Artur Davis
US Representative from Alabama
Joe Lieberman
Former US Senator for CT (1989-2013); Vice President nominee (2000)