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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Coburn, Tom [R-OK]* 03/13/2014
Sen. Klobuchar, Amy [D-MN]* 03/13/2014
Sen. Flake, Jeff [R-AZ]* 03/13/2014
Sen. Enzi, Michael B. [R-WY] 04/07/2014