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The Trump administration has finalized one of the most significant changes to the Endangered Species Act in decades, eliminating a long-standing interpretation that protected the habitats of threatened wildlife from destruction. The new rule removes habitat destruction from the federal definition of ‘harm,' meaning companies could clear forests, drain wetlands, develop coastlines, and disturb critical ecosystems without automatically violating the law. This would be provided they do not directly kill or injure an endangered animal. Environmental organizations have immediately vowed that they will take legal action, arguing the change weakens one of America's most important conservation laws after more than 50 years of federal precedent.
The rule overturns a policy that has defined federal wildlife protection since the 1970s. For decades, the U.S. Fish and Wildlife Service and the National Marine Fisheries Service defined ‘harm' under the Endangered Species Act to include significant habitat destruction that prevented endangered animals from feeding, breeding, or sheltering. The U.S. Supreme Court upheld that interpretation in 1995, creating a landmark in wildlife conservation. The 1995 decision rejected arguments that the law only applied when an animal was physically injured or killed. Now, Trump's new rule rescinds that interpretation, fundamentally changing how endangered species protections will be enforced moving forward.
Our industry is absolutely committed to the conservation and recovery of threatened and endangered species — and their habitats — but the definition of ‘harm' has long been abused to serve as a punitive obstacle impeding critical projects
-Tawny Bridgeford, National Mining Association
Impact on building projects
The change could have immediate implications for industries including oil and gas, mining, agriculture, forestry and residential development. Under the previous interpretation, projects that significantly damaged an endangered species' habitat often required additional permits, environmental reviews, or habitat conservation plans before moving forward. Now, under the revised rule, many of those requirements could disappear if developers are not directly harming individual animals. Administration officials said the change restores the Endangered Species Act to its original intent and prevents what they described as decades of regulatory overreach by previous administrations.
Industry groups welcomed the administration's decision, arguing habitat restrictions have delayed major infrastructure and energy projects for years. The National Mining Association said companies remain committed to wildlife conservation but argued the previous definition of harm had evolved into an unnecessary barrier preventing important economic development. Oil and gas organizations similarly argued the Endangered Species Act should apply only when a project directly injures protected animals rather than regulating broader land use decisions. Supporters claim the change will create greater certainty for businesses while limiting what they view as excessive federal oversight of private property.
Environmentalists balk
Environmental groups argue habitat loss is the primary reason endangered species disappear, making the rule potentially seriously damaging. Scientists have consistently identified habitat destruction as the leading cause of biodiversity loss worldwide, affecting thousands of species long before populations collapse. Legal experts say endangered animals rarely die from deliberate human actions. Instead, they gradually disappear after forests are cleared, wetlands are drained, rivers are polluted, or nesting areas are permanently altered. Critics argue the new rule ignores decades of biological research demonstrating that protecting wildlife requires protecting the places where animals live.
The New York Times reported the proposal generated roughly 220,000 public comments before being finalized, with approximately 99 per cent opposing the change. Opposition extended beyond environmental organizations. Wildlife officials in several Republican-led states warned the proposal would undermine decades of conservation work by weakening protections for already vulnerable species. State agencies argued that endangered animals depend on healthy ecosystems, making habitat protection inseparable from species protection. Attorneys general from 16 states also opposed the rule, calling the administration's legal justification arbitrary and inconsistent with the Endangered Species Act.
We are at the precipice of losing 50 years of progress in the protection of America's wildlife.
-Justin Pidot, University of Arizona environmental law professor
Court challenge incoming
The rule is expected to face immediate court challenges from environmental organizations, including Earthjustice, which has already announced plans to sue. Legal scholars say the outcome will ultimately depend on the Supreme Court, whose conservative majority will be tasked with determining whether the administration's interpretation is consistent with the Endangered Species Act or not. If upheld, the decision will be a major setback to federal wildlife protection. Conservation groups argue the stakes extend beyond legal definitions, warning that once habitat disappears, many endangered species may have nowhere left to recover, regardless of whether individual animals were directly harmed.
