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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Feingold, Russell D. [D-WI]* 05/05/2010
Sen. Murray, Patty [D-WA] 05/11/2010
Sen. Leahy, Patrick J. [D-VT] 09/20/2010
Sen. McCaskill, Claire [D-MO] 11/18/2010