In the steady drip, drip, drip of Trump legislation threatening nature, survival, and the Great Society, Republicans in the House of Representatives have introduced a bill, HR 717, intended to weaken the Endangered Species Act.  The bill, known as the Listing Reform Act of 2017, would amend the Endangered Species Act to require review of the economic cost of adding a species to the list of endangered species or threatened species, or for other purposes.  More info from The Verge .