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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Crapo, Mike [R-ID]* 09/20/2012
Sen. McCaskill, Claire [D-MO]* 09/20/2012
Sen. Risch, James E. [R-ID]* 09/20/2012
Sen. Carper, Thomas R. [D-DE]* 09/20/2012
Sen. Vitter, David [R-LA]* 09/20/2012
Sen. Coons, Christopher A. [D-DE]* 09/20/2012
Sen. Landrieu, Mary L. [D-LA]* 09/20/2012
Sen. Pryor, Mark L. [D-AR]* 09/20/2012
Sen. Conrad, Kent [D-ND]* 09/20/2012
Sen. Inhofe, James M. [R-OK] 09/21/2012
Sen. Barrasso, John [R-WY] 11/13/2012
Sen. Chambliss, Saxby [R-GA] 11/13/2012