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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Grassley, Chuck [R-IA]* 07/15/2010
Sen. Enzi, Michael B. [R-WY]* 07/15/2010
Sen. Isakson, Johnny [R-GA]* 07/15/2010
Sen. Collins, Susan M. [R-ME]* 07/15/2010