U.S. Fish and Wildlife Service (FWS) and the National Marine Fisheries Service (NMFS; collectively referred to as the "Services") rescind the regulatory definition of "harm" in our Endangered Species Act (ESA or the Act) regulations. This rescission removes the regulatory definition of "harm" from the Code of Federal Regulations (CFR) in Title 50 parts 17 and 222. This final rule is effective 14 September 2026. POC is John Tirpak, Acting Assistant Director, Ecological Services, at 703-358-2171 or ADEcologicalServices@fws.gov. (Federal Register 14 July 2026 [Rule] Pages 43300-43317)