This resolution seeks to block a federal rule issued by the U.S. Fish and Wildlife Service and the National Oceanic and Atmospheric Administration that rescinded the definition of "harm" under the Endangered Species Act. That underlying rule, published on July 14, 2026, had narrowed what counts as harming an endangered species, which critics argue weakens protections against habitat destruction. Using its authority under the Congressional Review Act, Congress can vote to disapprove agency rules, and if this resolution passes, the rule would be nullified and have no legal effect. This action primarily affects federal wildlife agencies, businesses and developers whose activities might impact endangered species habitats, and conservation groups concerned with species protection. There is no direct funding involved, and the practical effect would be to restore the prior, broader definition of "harm" that existed before the rescinded rule took effect.