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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Levin, Carl [D-MI] 04/22/2009
Sen. Feingold, Russell D. [D-WI] 04/24/2009
Sen. Stabenow, Debbie [D-MI] 10/05/2009
Sen. Franken, Al [D-MN] 02/23/2010