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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Portman, Rob [R-OH]* 04/18/2013
Sen. Coons, Christopher A. [D-DE] 05/08/2013
Sen. Collins, Susan M. [R-ME] 05/08/2013
Sen. Warner, Mark R. [D-VA] 05/15/2013
Sen. Ayotte, Kelly [R-NH] 05/15/2013