The National Wildlife Federation has launched a campaign to get a total of 218 sponsors for the Waxman (HR 1590, equivalent to Boxer-Sanders) or the Olver-Gilchrest (HR 620, equivalent to McCain-Lieberman) cap-and-trade climate bills. The two bills combined have 170 co-sponsors. NWF is targeting what they call The Final Fifty, fifty legislators who have not co-sponsored either bill.