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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Enzi, Michael B. [R-WY]* 07/10/2008
Sen. Tester, Jon [D-MT]* 07/10/2008
Sen. Barrasso, John [R-WY]* 07/10/2008
Sen. McCaskill, Claire [D-MO]* 07/10/2008
Sen. Domenici, Pete V. [R-NM]* 07/10/2008
Sen. Dorgan, Byron L. [D-ND]* 07/10/2008
Sen. Allard, Wayne [R-CO]* 07/10/2008
Sen. Salazar, Ken [D-CO]* 07/10/2008
Sen. Nelson, Ben [D-NE]* 07/10/2008
Sen. Thune, John [R-SD] 07/11/2008
Sen. Conrad, Kent [D-ND] 07/16/2008
Sen. Durbin, Richard [D-IL] 07/16/2008