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* = Original cosponsor

CosponsorDate Cosponsored
Sen. Grassley, Chuck [R-IA]* 05/23/2012
Sen. Landrieu, Mary L. [D-LA]* 05/23/2012
Sen. Cardin, Benjamin L. [D-MD]* 05/23/2012
Sen. Wyden, Ron [D-OR]* 05/23/2012
Sen. Cochran, Thad [R-MS]* 05/23/2012
Sen. Begich, Mark [D-AK] 06/12/2012
Sen. Brown, Scott P. [R-MA] 09/21/2012
Sen. Boxer, Barbara [D-CA] 12/12/2012