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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Merkley, Jeff [D-OR]* 03/19/2009
Sen. Coburn, Tom [R-OK]* 03/19/2009
Sen. Brownback, Sam [R-KS] 03/31/2009
Sen. Wyden, Ron [D-OR] 04/23/2009
Sen. Sessions, Jeff [R-AL] 09/21/2009