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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Collins, Susan M. [R-ME]* 04/14/2011
Sen. Kerry, John F. [D-MA]* 04/14/2011
Sen. Leahy, Patrick J. [D-VT]* 04/14/2011
Sen. Shaheen, Jeanne [D-NH] 12/03/2012