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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Nelson, Bill [D-FL]* 07/25/2012
Sen. Feinstein, Dianne [D-CA]* 07/25/2012
Sen. Johanns, Mike [R-NE] 08/01/2012
Sen. Boxer, Barbara [D-CA] 11/27/2012