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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Inhofe, James M. [R-OK]* 04/12/2011
Sen. Roberts, Pat [R-KS]* 04/12/2011
Sen. Isakson, Johnny [R-GA]* 04/12/2011
Sen. Barrasso, John [R-WY]* 04/12/2011