Interagency Cooperation-Endangered Species Act of 1973, as Amended; Definition of Destruction or Adverse Modification of Critical Habitat

The U.S. Fish and Wildlife Service (FWS) and the National Marine Fisheries Service (NMFS), collectively referred to as the "Services" or "we," revise a regulatory definition that is integral to our implementation of the Endangered Species Act of 1973, as amended (Act or ESA). The Act requires Federal agencies, in consultation with and with the assistance of the Services, to insure that their actions are not likely to jeopardize the continued existence of endangered or threatened species or result in the destruction or adverse modification of critical habitat of such species. On May 12, 2014, we proposed to revise the definition for "destruction or adverse modification" in our regulations as this definition had been found to be invalid by two circuit courts. In response to public comments received on our proposed rule, we have made minor revisions to the definition. This rule responds to section 6 of Executive Order 13563 (January 18, 2011), which directs agencies to analyze their existing regulations and, among other things, modify or streamline them in accordance with what has been learned.