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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Leahy, Patrick J. [D-VT]* 12/13/2011
Sen. Durbin, Richard [D-IL]* 12/13/2011
Sen. Coons, Christopher A. [D-DE] 01/31/2012
Sen. Harkin, Tom [D-IA] 01/31/2012
Sen. Whitehouse, Sheldon [D-RI] 09/10/2012