This bill seeks to prevent a specific regulatory change by declaring that a final rule issued by the United States Fish and Wildlife Service and the National Oceanic and Atmospheric Administration shall have no legal effect. The rule in question is titled "Rescinding the Definition of `Harm' Under the Endangered Species Act" and was published on July 14, 2026, in the Federal Register. By nullifying this rule, the legislation effectively blocks the rescission of the existing definition of "harm" under the Endangered Species Act of 1973. This action ensures that the current interpretation and application of "harm" for endangered species protection remain unchanged, thereby maintaining the established scope of protections for listed species.