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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Barrasso, John [R-WY]* 04/22/2009
Sen. Merkley, Jeff [D-OR]* 04/22/2009
Sen. Johanns, Mike [R-NE]* 04/22/2009
Sen. Carper, Thomas R. [D-DE]* 04/22/2009
Sen. Klobuchar, Amy [D-MN]* 04/22/2009
Sen. Kaufman, Edward E. [D-DE]* 04/22/2009
Sen. Begich, Mark [D-AK] 06/10/2009