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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Rubio, Marco [R-FL]* 03/20/2012
Sen. Brown, Scott P. [R-MA]* 03/20/2012
Sen. Merkley, Jeff [D-OR]* 03/20/2012
Sen. Mikulski, Barbara A. [D-MD]* 03/20/2012
Sen. Harkin, Tom [D-IA]* 03/20/2012
Sen. Blumenthal, Richard [D-CT] 04/16/2012