The Trump administration finalized a rule on July 10, 2026 that repeals habitat protections embedded in the Endangered Species Act for more than three decades, opening the ranges of imperiled wildlife to logging, mining, and development The Guardian.

The rule, jointly issued by the Department of the Interior and the Department of Commerce, rewrites the regulatory definition of "harm" under the ESA. Since 1995, that definition has covered not just direct killing or injury of a listed species but also habitat modification substantial enough to impair breeding, feeding, or sheltering. The new rule narrows "harm" to direct, intentional acts against individual animals, removing habitat degradation from the statute's reach. Agency officials characterized the prior interpretation as regulatory overreach into private property rights.

Interior Secretary Doug Burgum said the ESA's habitat provisions "turned routine activity into a regulatory trap," and accused federal agencies of using the law's "harm" definition to block or delay projects far beyond what Congress intended when it wrote the statute in 1973 The Guardian.

Legal Basis and Precedent

The habitat-modification standard the new rule discards traces to Babbitt v. Sweet Home Chapter of Communities for a Great Oregon, the 1995 Supreme Court decision that upheld the Fish and Wildlife Service's broad reading of "harm" in a case centered on old-growth forest protections for the northern spotted owl The Guardian. That ruling has anchored ESA enforcement against habitat destruction for thirty-one years, giving federal agencies standing to block timber sales, pipeline routes, and development projects that would degrade critical habitat even absent direct contact with a listed species.

The administration's move did not arrive without warning. The Federal Register published the proposed rule rescinding the "harm" definition on April 17, 2025 Federal Register, and the comment period drew hundreds of thousands of submissions in opposition, according to the Guardian's reporting. It followed an earlier, narrower carve-out: on March 31, 2026, Reuters reported the administration had exempted Gulf of Mexico oil and gas drillers from endangered species protections on national security grounds Reuters. That exemption now reads as a precursor to Thursday's government-wide rule rather than an isolated sectoral fix.

Earthjustice attorney Kristen Boyles said this marks the first time any presidential administration has taken the position that species protected under the ESA should not be shielded from habitat modification altogether The Guardian. That framing sets up the inevitable legal challenge: opponents will likely argue the rule conflicts with both the statutory text Congress wrote and the Supreme Court's reading of it in Sweet Home, while the administration will argue Sweet Home deferred to an agency interpretation that agencies remain free to revise. Whether a reviewing court applies Loper Bright's post-Chevron posture to uphold that latitude, or treats the reversal as arbitrary and capricious given the reliance interests built around the 1995 standard, will likely determine the rule's fate faster than any political process.

Stakes for Listed Species

The ESA has been credited with keeping 99% of the roughly 1,700-plus species it protects from extinction The Guardian, a track record advocates cite as evidence the habitat-modification standard functions as the statute's operative mechanism rather than a peripheral add-on. Stephanie Kurose of the Center for Biological Diversity called the rule "a death sentence" for species including wolverines, monarch butterflies, and Florida manatees, all of which depend on protections against habitat encroachment rather than protection from direct killing alone The Guardian.

The global backdrop for that warning is stark. The 2019 IPBES global assessment found roughly one million species threatened with extinction, including 40% of amphibians and a third of reef-forming corals, marine mammals, and sharks The Guardian. For species whose principal threat is habitat loss rather than direct take, a narrowed "harm" definition removes the primary lever regulators have used to intervene.

Public opinion data complicates the administration's framing of the rule as a correction to bureaucratic overreach. A 2023 poll found 80% of registered US voters favored full funding of the Endangered Species Act The Guardian, suggesting the rule change runs counter to broad, bipartisan public sentiment on the underlying statute even as it proceeds through executive rulemaking rather than legislative amendment.

The rule's practical effect will depend heavily on litigation timelines and whether courts stay its implementation pending review. Industry groups in extractive sectors — timber, mining, oil and gas — have pushed for exactly this kind of regulatory clarity for years, arguing that habitat-based ESA enforcement created unpredictable permitting delays. Conservation groups now face the choice of litigating the rule itself or pursuing state-level habitat protections as a backstop, a strategy with mixed success given the ESA's historical role in preempting weaker state standards.