Lamar Alexander (TN)

Kelly Ayotte (NH)

Jeff Chiesa (NJ)

Susan Collins (ME)

Bob Corker (TN)

Jeff Flake (AZ)

Lindsey Graham (SC)

Orrin Hatch (UT)

Dean Heller (NV)

John Hoeven (ND)

Mark Kirk (IL)

John McCain (AZ)

Lisa Murkowski (AK)

Marco Rubio (FL)