The Trump administration has finalized a rule that weakens how one of the nation’s most important wildlife laws—the Endangered Species Act (ESA)—is implemented.
The decision rescinds a decades-old regulatory definition of the word “harm,” making it much harder to hold people accountable for destroying habitat that endangered species rely on to survive. While the ESA itself remains in place, this change creates new legal uncertainty and could make it more difficult to prove violations of the law in many situations.
For more than 40 years, courts and federal agencies interpreted “harm” to include significant habitat destruction that injures or kills protected wildlife. Under the new rule, the administration argues that “harm” should be largely limited to directly injuring or killing an animal, such as through poaching or intentional killing. Habitat destruction alone will likely become much more difficult to challenge under the ESA if the rule survives legal challenges.
What does this mean?
The impacts of this decision are not as simple as they may first appear.
The Endangered Species Act has not been repealed. Important protections remain in place, including:
- Federal agencies must still consult under Section 7 of the ESA before approving actions that could jeopardize listed species or adversely modify designated critical habitat.
- Critical habitat protections remain in effect.
- Directly killing or injuring listed wildlife is still prohibited.
- Existing permits and incidental take authorizations remain valid.
Where could this have the biggest impact?
The greatest concern is for private and non-federal activities, where habitat destruction may now face fewer legal obstacles under the Endangered Species Act if courts ultimately adopt the administration’s narrower interpretation of “harm”.
For decades, the ESA recognized a simple reality: destroying the places wildlife depend on can be just as devastating as directly killing an animal. Species disappear when forests are cleared, wetlands are drained, streams are polluted, and breeding or nesting habitat is lost. By the time an animal is injured or killed, the damage has often already been done.
By removing the regulatory definition of “harm” that included significant habitat destruction, the new rule could make it far more difficult to challenge projects that permanently alter or degrade habitat before wildlife suffers direct injury. That shift raises serious concerns for species already struggling to survive, especially those that rely on shrinking or fragmented habitat outside federally protected lands.
For conservationists, this represents a fundamental change in how wildlife is protected. Instead of preventing harm before it occurs, the burden may increasingly fall on proving that individual animals were directly injured making it harder to stop destructive projects before irreversible damage is done.
Why it matters on the Central Coast
More than 20 threatened and endangered species depend on habitats in Los Padres National Forest and across California’s Central Coast, including California condors, southern California steelhead, California red-legged frogs, and arroyo toads.
The Endangered Species Act has prevented the extinction of more than 99% of listed species since it became law. That success has depended not only on protecting individual animals, but also on protecting the places they need to survive.
While this rule does not eliminate ESA protections, it weakens one of the law’s most important conservation tools at a time when wildlife is already facing increasing pressure from development, wildfire, drought, and climate change.
Los Padres ForestWatch will continue advocating for science-based protections that conserve both endangered species and the habitats they depend on.