By Eric Eyre CHARLESTON, W.Va. - West Virginia's Republican-controlled Legislature has fired its first salvo against the federal Affordable Care Act.Lawmakers plan to take up a GOP-backed bill Tuesday that would repeal a 2010 state law that set up a health insurance exchange that provides insurance to 19,800 West Virginians under the ACA.The bill's critics - health advocates and some Democrats - say the legislation, coupled with a U.S.