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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Portman, Rob [R-OH]* 03/08/2012
Sen. Pryor, Mark L. [D-AR]* 03/08/2012
Sen. Coburn, Tom [R-OK]* 03/08/2012
Sen. Begich, Mark [D-AK]* 03/08/2012
Sen. Collins, Susan M. [R-ME] 12/05/2012