Why It Matters
A federal rule change announced July 10, 2026, strips one of the Endangered Species Act’s most consequential protections — the requirement that habitat destruction be treated as a form of harm to protected species. For Michigan and other states with significant designated critical habitat, the shift could affect how land is developed, logged, or mined without federal review.
The change rewrites regulatory language that has been in place for over five decades, and conservation groups argue it could accelerate species loss at a moment when habitat pressure is already intensifying nationwide.
What Happened
The Trump administration issued a new rule eliminating habitat destruction from the legal definition of “harm” under the Endangered Species Act. Since 1975, federal regulations had interpreted harm broadly to include activities that significantly degraded or destroyed the habitat of listed species — even when no animal was directly killed.
That interpretation survived a Supreme Court challenge in the 1995 case Babbitt v. Sweet Home Chapter of Communities for a Great Oregon, which affirmed that indirect harm through habitat loss qualified as prohibited “harm” under the Act. The new rule reverses that longstanding regulatory position without conducting an environmental impact analysis.
Secretary of the Interior Doug Burgum pointed in part to advances in biotechnology — including the partial de-extinction of the dire wolf, achieved by altering 14 genes in a gray wolf genome — suggesting such developments could help forge a future where species populations are “never at risk.” Wildlife advocacy organizations rejected that framing and announced plans to file suit challenging the rule.
By the Numbers
107 million acres of U.S. land are currently designated as critical habitat for species listed under the Endangered Species Act. The definition change does not formally strip that designation, but it removes the regulatory teeth that made habitat protection enforceable.
81% of species listed as endangered between 1975 and 2017 were classified primarily because of habitat loss and degradation — not direct killing. Only 17% of listed species during that period faced direct killing as their primary threat.
A 2022 global study reinforced those figures, finding that habitat loss threatened more species than all other causes combined. The Center for Biological Diversity estimates the Endangered Species Act has saved 99% of the species it has protected from extinction since the law was enacted in 1973.
Zoom Out
The rule change arrives as land-use and environmental policy disputes are intensifying across the country. States are navigating competing pressures between development interests and conservation obligations, a tension already visible in debates over Michigan’s renewable energy law and its realignment of land-use authority between state and local governments.
Federal rollbacks of habitat protections tend to have downstream effects on state-level environmental programs, particularly in states like Michigan where Great Lakes ecosystems and forest habitat intersect with significant agricultural and industrial activity. Air quality and environmental health concerns have also grown in the region, including episodes like wildfire smoke events that prompted state air quality alerts and court closures.
Nationally, the administration’s move fits within a broader pattern of scaling back regulatory interpretations that were established through agency rulemaking rather than explicit statutory text — an approach that aligns with legal arguments gaining traction in federal courts following the Supreme Court’s curtailment of Chevron deference.
What’s Next
Wildlife and conservation organizations have signaled they will challenge the rule in federal court, likely arguing that removing habitat destruction from the definition of harm contradicts the statute’s text and the Supreme Court’s 1995 ruling. Legal proceedings could take months to years to resolve.
In the interim, the rule takes effect without an environmental impact analysis having been completed — a procedural gap that may itself form part of the legal basis for any lawsuit. Congressional action to codify or reverse the change remains possible but would require sufficient votes in both chambers.
Landowners, developers, and state agencies will be watching court proceedings closely, as the outcome will determine how much habitat-altering activity proceeds without federal oversight during the litigation period.