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* = Original cosponsor

CosponsorDate Cosponsored
Sen. Landrieu, Mary L. [D-LA]* 02/23/2010
Sen. Bond, Christopher S. [R-MO]* 02/23/2010
Sen. Merkley, Jeff [D-OR]* 02/23/2010
Sen. Dorgan, Byron L. [D-ND] 04/12/2010
Sen. McCaskill, Claire [D-MO] 07/12/2010