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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Collins, Susan M. [R-ME]* 06/13/2013
Sen. Whitehouse, Sheldon [D-RI] 07/08/2013
Sen. Klobuchar, Amy [D-MN] 02/24/2014
Sen. Toomey, Pat [R-PA] 04/10/2014