A fight is brewing over the Endangered Species Act after congressional Republicans and federal agencies this year proposed major changes, including shifting more control over species protection to the states. Many states, especially Western ones with vast expanses of federal land, have long pushed for changes to the law. But what seemed unlikely under prior administrations has a better shot under the Trump presidency.A package of bills introduced in the U.S. House of Representatives by members of the Congressional Western Caucus, all with Republican sponsors, would alter how species are listed and habitat is protected. States are most focused on measures that would affect their power, including bills that would allow them greater say over which species get protections. A draft bill in the U.S. Senate being circulated by Wyoming Sen. John Barrasso, a Republican, would “elevate the role of state conservation agencies,” according to a news release from the U.S. Senate committee.While the various pieces of legislation may face a heavy lift getting through Congress, federal agencies last month finished taking public comments on proposed rule changes. Unveiled in July, the agency revisions would allow agencies to consider economic costs when deciding whether to protect species, possibly reduce the amount of protected habitat and make it easier to take species off the endangered and threatened species list, among other changes proposed by the Department of the Interior and the National Oceanic and Atmospheric Administration.