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* = Original cosponsor

CosponsorDate Cosponsored
Rep. Beauprez, Bob [R-CO-7]* 11/04/2005
Rep. Musgrave, Marilyn N. [R-CO-4] 12/06/2005
Rep. Udall, Mark [D-CO-2] 06/08/2006
Rep. DeGette, Diana [D-CO-1] 07/26/2006
Rep. Tancredo, Thomas G. [R-CO-6] 07/26/2006
Rep. Salazar, John T. [D-CO-3] 07/26/2006