Tammy Baldwin (D-WI) 
Mark Begich (D-AK)
Michael Bennet (D-CO)
Richard Blumenthal (D-CT)
Cory Booker (D-NJ)
Maria Cantwell (D-WA)
Ben Cardin (D-MD)
Tom Carper (D-DE)
Bob Casey, Jr. (D-PA)
Christopher Coons (D-DE)
Richard Durbin (D-IL)
Dianne Feinstein (D-CA)
Al Franken (D-MN)
Kirsten Gillibrand (D-NY)
Kay Hagan (D-NC)
Tom Harkin (D-IA)
Martin Heinrich (D-NM)
Mazie Hirono (D-HI)
Tim Johnson (D-SD)
Tim Kaine (D-VA)
Angus King (I-ME)
Mark Kirk (R-IL)
Amy Klobuchar (D-MN)
Mary Landrieu (D-LA)
Patrick Leahy (D-VT)
Carl Levin (D-MI)
Ed Markey (D-MA)
Claire McCaskill (D-MO)
Robert Menendez (D-NJ)
Jeff Merkley (D-OR)
Barbara Mikulski (D-MD)
Chris Murphy (D-CT)
Patty Murray (D-WA)
Bill Nelson (D-FL)
Mark Pryor (D-AR)
Jack Reed (D-RI)
Harry Reid (D-NV)
Jay Rockefeller (D-WV)
Bernie Sanders (I-VT)
Brian Schatz (D-HI)
Charles Schumer (D-NY)
Jeanne Shaheen (D-NH)
Debbie Stabenow (D-MI)
Jon Tester (D-MT)
Mark Udall (D-CO)
Tom Udall (D-NM)
John Walsh (D-MT)
Mark Warner (D-VA)
Elizabeth Warren (D-MA)
Sheldon Whitehouse (D-RI)
Ron Wyden (D-OR)
Lamar Alexander (R-TN) 
Kelly Ayotte (R-NH)
John Barrasso (R-WY)
Roy Blunt (R-MO)
John Boozman (R-AR)
Richard Burr (R-NC)
Dan Coats (R-IN)
Tom Coburn (R-OK)
Susan Collins (R-ME)
Bob Corker (R-TN)
John Cornyn (R-TX)
Mike Crapo (R-ID)
Ted Cruz (R-TX)
Joe Donnelly (D-IN)
Michael Enzi (R-WY)
Deb Fischer (R-NE)
Jeff Flake (R-AZ)
Lindsey Graham (R-SC)
Charles Grassley (R-IA)
Orrin Hatch (R-UT)
Heidi Heitkamp (D-ND)
Dean Heller (R-NV)
John Hoeven (R-ND)
Jim Inhofe (R-OK)
Johnny Isakson (R-GA)
Ron Johnson (R-WI)
Mike Lee (R-UT)
Joe Manchin (D-WV)
John McCain (R-AZ)
Mitch McConnell (R-KY)
Jerry Moran (R-KS)
Lisa Murkowski (R-AK)
Rand Paul (R-KY)
Rob Portman (R-OH)
Jim Risch (R-ID)
Pat Roberts (R-KS)
Tim Scott (R-SC)
Jeff Sessions (R-AL)
Richard Shelby (R-AL)
John Thune (R-SD)
Pat Toomey (R-PA)
David Vitter (R-LA)
Roger Wicker (R-MS)
Barbara Boxer (D-CA)
Sherrod Brown (D-OH)
Saxby Chambliss (R-GA)
Thad Cochran (R-MS)
Mike Johanns (R-NE)
Marco Rubio (R-FL)