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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Grassley, Chuck [R-IA]* 08/01/2012
Sen. Begich, Mark [D-AK]* 08/01/2012
Sen. Blunt, Roy [R-MO]* 08/01/2012
Sen. Boxer, Barbara [D-CA]* 08/01/2012
Sen. Franken, Al [D-MN]* 08/01/2012
Sen. Klobuchar, Amy [D-MN]* 08/01/2012
Sen. Kerry, John F. [D-MA] 09/10/2012
Sen. Murray, Patty [D-WA] 09/10/2012
Sen. Feinstein, Dianne [D-CA] 12/05/2012