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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Cochran, Thad [R-MS]* 04/17/2007
Sen. Kennedy, Edward M. [D-MA]* 04/17/2007
Sen. Stevens, Ted [R-AK]* 04/17/2007
Sen. Bingaman, Jeff [D-NM]* 04/17/2007
Sen. Kerry, John F. [D-MA]* 04/17/2007
Sen. Rockefeller, John D., IV [D-WV]* 04/17/2007
Sen. Bayh, Evan [D-IN] 04/20/2007
Sen. Whitehouse, Sheldon [D-RI] 01/24/2008