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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Alexander, Lamar [R-TN]* 03/21/2013
Sen. Portman, Rob [R-OH]* 03/21/2013
Sen. Inhofe, James M. [R-OK]* 03/21/2013
Sen. Grassley, Chuck [R-IA]* 03/21/2013
Sen. Hoeven, John [R-ND]* 03/21/2013
Sen. Isakson, Johnny [R-GA]* 03/21/2013
Sen. Risch, James E. [R-ID]* 03/21/2013
Sen. Wicker, Roger F. [R-MS]* 03/21/2013
Sen. Ayotte, Kelly [R-NH]* 03/21/2013
Sen. Flake, Jeff [R-AZ]* 03/21/2013
Sen. Vitter, David [R-LA]* 03/21/2013
Sen. Coburn, Tom [R-OK]* 03/21/2013