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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Mikulski, Barbara A. [D-MD]* 03/11/2013
Sen. Casey, Robert P., Jr. [D-PA]* 03/11/2013
Sen. Boozman, John [R-AR] 03/18/2013
Sen. Blumenthal, Richard [D-CT] 05/15/2013