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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Coleman, Norm [R-MN]* 04/24/2008
Sen. Feingold, Russell D. [D-WI]* 04/24/2008
Sen. Durbin, Richard [D-IL]* 04/24/2008
Sen. Dodd, Christopher J. [D-CT]* 04/24/2008
Sen. Obama, Barack [D-IL]* 04/24/2008
Sen. Isakson, Johnny [R-GA]* 04/24/2008
Sen. Biden, Joseph R., Jr. [D-DE] 04/28/2008
Sen. Lieberman, Joseph I. [ID-CT] 04/28/2008
Sen. Leahy, Patrick J. [D-VT] 04/28/2008
Sen. Clinton, Hillary Rodham [D-NY] 04/28/2008
Sen. Cardin, Benjamin L. [D-MD] 04/28/2008