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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Coburn, Tom [R-OK]* 09/25/2013
Sen. Johnson, Ron [R-WI]* 09/25/2013
Sen. Johanns, Mike [R-NE] 09/26/2013
Sen. Portman, Rob [R-OH] 09/27/2013