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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Burr, Richard [R-NC]* 02/15/2012
Sen. Shaheen, Jeanne [D-NH]* 02/15/2012
Sen. Risch, James E. [R-ID]* 02/15/2012
Sen. Sanders, Bernard [I-VT] 02/16/2012
Sen. Udall, Mark [D-CO] 02/16/2012
Sen. Bennet, Michael F. [D-CO] 02/29/2012
Sen. Stabenow, Debbie [D-MI] 02/29/2012
Sen. Brown, Scott P. [R-MA] 03/13/2012