Current co-sponsors of S. 2453:

Sen. Allard, Wayne (CO)
Sen. Chambliss, Saxby (GA)
Sen. Coburn, Tom (OK)
Sen. Conrad, Kent (ND)
Sen. Corker, Bob (TN)
Sen. Crapo, Mike (ID)
Sen. Gregg, Judd (NH)
Sen. Inhofe, James M. (OK)
Sen. Isakson, Johnny (GA)
Sen. McConnell, Mitch (KY)
Sen. Stevens, Ted (AK)
Sen. Thune, John (SD)
Sen. Vitter, David (LA)