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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Rockefeller, John D., IV [D-WV]* 11/04/2009
Sen. Enzi, Michael B. [R-WY] 11/19/2009
Sen. Dorgan, Byron L. [D-ND] 11/19/2009
Sen. Casey, Robert P., Jr. [D-PA] 11/19/2009
Sen. Murray, Patty [D-WA] 11/30/2009
Sen. Specter, Arlen [D-PA] 11/30/2009
Sen. Barrasso, John [R-WY] 11/30/2009
Sen. Brown, Sherrod [D-OH] 11/30/2009
Sen. Baucus, Max [D-MT] 11/30/2009
Sen. Tester, Jon [D-MT] 11/30/2009
Sen. Ensign, John [R-NV] 12/03/2009