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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Carper, Thomas R. [D-DE]* 06/12/2012
Sen. Casey, Robert P., Jr. [D-PA]* 06/12/2012
Sen. Coons, Christopher A. [D-DE]* 06/12/2012
Sen. Mikulski, Barbara A. [D-MD]* 06/12/2012
Sen. Rockefeller, John D., IV [D-WV]* 06/12/2012
Sen. Warner, Mark R. [D-VA]* 06/12/2012
Sen. Webb, Jim [D-VA]* 06/12/2012