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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Lieberman, Joseph I. [ID-CT]* 03/17/2009
Sen. Coburn, Tom [R-OK]* 03/17/2009
Sen. Levin, Carl [D-MI]* 03/17/2009
Sen. Grassley, Chuck [R-IA]* 03/17/2009
Sen. McCaskill, Claire [D-MO]* 03/17/2009
Sen. McCain, John [R-AZ]* 03/17/2009
Sen. Voinovich, George V. [R-OH]* 03/17/2009
Sen. Ensign, John [R-NV] 04/01/2009