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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Klobuchar, Amy [D-MN]* 07/28/2011
Sen. Manchin, Joe, III [D-WV]* 07/28/2011
Sen. Tester, Jon [D-MT]* 07/28/2011
Sen. Rockefeller, John D., IV [D-WV] 07/31/2011