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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Snowe, Olympia J. [R-ME]* 04/22/2008
Sen. Lieberman, Joseph I. [ID-CT]* 04/22/2008
Sen. Vitter, David [R-LA]* 04/22/2008
Sen. Cardin, Benjamin L. [D-MD]* 04/22/2008
Sen. Dole, Elizabeth [R-NC]* 04/22/2008
Sen. Landrieu, Mary L. [D-LA]* 04/22/2008
Sen. Thune, John [R-SD]* 04/22/2008
Sen. Cantwell, Maria [D-WA]* 04/22/2008
Sen. Enzi, Michael B. [R-WY]* 04/22/2008
Sen. Bayh, Evan [D-IN]* 04/22/2008
Sen. Isakson, Johnny [R-GA]* 04/22/2008
Sen. Pryor, Mark L. [D-AR]* 04/22/2008
Sen. Levin, Carl [D-MI]* 04/22/2008
Sen. Tester, Jon [D-MT]* 04/22/2008
Sen. Coleman, Norm [R-MN] 04/23/2008