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* = Original cosponsor
CosponsorDate Cosponsored
Sen. Domenici, Pete V. [R-NM]* 01/10/2007
Sen. Bingaman, Jeff [D-NM]* 01/10/2007
Sen. Enzi, Michael B. [R-WY]* 01/10/2007
Sen. Stevens, Ted [R-AK]* 01/10/2007
Sen. Bennett, Robert F. [R-UT]* 01/10/2007
Sen. Murkowski, Lisa [R-AK]* 01/10/2007
Sen. Bunning, Jim [R-KY]* 01/10/2007
Sen. Roberts, Pat [R-KS] 01/30/2007