1. Akaka, Daniel (D-HI)
  2. Baucus, Max (D-MT)
  3. Bayh, Evan (D-IN)
  4. Biden, Joseph (D-DE)
  5. Bingaman, Jeff (D-NM)
  6. Boxer, Barbara (D-CA)
  7. Brown, Sherrod (D-OH)
  8. Byrd, Robert (D-WV)
  9. Cantwell, Maria (D-WA)
  10. Cardin, Benjamin (D-MD)
  11. Carper, Thomas (D-DE)
  12. Casey, Bob (D-PA)
  13. Clinton, Hillary (D-NY)
  14. Conrad, Kent (D-ND)
  15. Dodd, Christopher (D-CT)
  16. Dorgan, Byron (D-ND)
  17. Durbin, Richard (D-IL)
  18. Feingold, Russell (D-WI)
  19. Feinstein, Diane (D-CA)
  20. Harkin, Tom (D-IA)
  21. Inouye, Daniel (D-HI)
  22. Johnson, Tim (D-SD)
  23. Kennedy, Edward (D-MA)—Sponsor
  24. Kerry, John (D-MA)
  25. Klobuchar, Amy (D-MN)
  26. Kohl, Herbert (D-WI)
  27. Landrieu, Mary (D-LA)
  28. Lautenberg, Frank (D-NJ)
  29. Leahy, Patrick (D-VT)
  30. Levin, Carl (D-MI)
  31. Lieberman, Joseph (I-CT)
  32. McCaskill, Claire (D-MO)
  33. Menendez, Robert (D-NJ)
  34. Mikulski, Barbara (D-MD)
  35. Murray, Patty (D-WA)
  36. Nelson, Bill (D-FL)
  37. Obama, Barack (D-IL)
  38. Reed, Jack (D-RI)
  39. Reid, Harry (D-NV)
  40. Rockefeller, Jay (D-WV)
  41. Sanders, Bernard (I-VT)
  42. Schumer, Charles (D-NY)
  43. Stabenow, Debbie (D-MI)
  44. Tester, Jon (D-MT)
  45. Webb, James (D-VA)
  46. Whitehouse, Sheldon (D-RI)
  47. Wyden, Ron (D-OR)