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* = Original cosponsor

Cosponsor Date Cosponsored
Sen. Udall, Mark [D-CO]* 06/07/2012
Sen. Burr, Richard [R-NC]* 06/07/2012
Sen. McCain, John [R-AZ]* 06/07/2012
Sen. Ayotte, Kelly [R-NH]* 06/07/2012
Sen. Moran, Jerry [R-KS]* 06/07/2012
Sen. Grassley, Chuck [R-IA] 06/19/2012