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* = Original cosponsor
Cosponsor Date Cosponsored
Sen. Mikulski, Barbara A. [D-MD]* 12/07/2009
Sen. Casey, Robert P., Jr. [D-PA] 12/08/2009
Sen. Brown, Sherrod [D-OH] 12/17/2009
Sen. Merkley, Jeff [D-OR] 12/22/2009
Sen. Stabenow, Debbie [D-MI] 12/23/2009