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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Barrasso, John [R-WY]* 04/26/2012
Sen. Murkowski, Lisa [R-AK]* 04/26/2012
Sen. Paul, Rand [R-KY]* 04/26/2012
Sen. Hatch, Orrin G. [R-UT]* 04/26/2012