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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Collins, Susan M. [R-ME]* 02/03/2009
Sen. Grassley, Chuck [R-IA]* 02/03/2009
Sen. Levin, Carl [D-MI]* 02/03/2009
Sen. Lieberman, Joseph I. [ID-CT]* 02/03/2009
Sen. Voinovich, George V. [R-OH]* 02/03/2009
Sen. Leahy, Patrick J. [D-VT]* 02/03/2009
Sen. Kennedy, Edward M. [D-MA]* 02/03/2009
Sen. Carper, Thomas R. [D-DE]* 02/03/2009
Sen. Pryor, Mark L. [D-AR]* 02/03/2009
Sen. Mikulski, Barbara A. [D-MD]* 02/03/2009
Sen. Cardin, Benjamin L. [D-MD] 03/30/2009
Sen. Burris, Roland [D-IL] 03/31/2009
Sen. Tester, Jon [D-MT] 11/30/2010