Trump administration quietly redefines endangered species protections to allow incidental kills

The Trump administration has issued a sweeping reinterpretation of the Endangered Species Act that could dramatically weaken protections for vulnerable wildlife. According to documents obtained by The New York Times, US Fish and Wildlife Service leadership directed field offices nationwide to adopt a narrower reading of what constitutes illegal harm to protected animals.

What changed#

The new approach fundamentally reshapes how the law applies to accidental deaths caused by private activity. Under the revised standard, activities like ship strikes on whales or tree felling that kills bat populations would no longer trigger legal protections unless the person or entity responsible intended to harm the animal. FWS Director Brian Nesvik's September 14 memo illustrated the shift with stark examples: a vessel that strikes a whale "has not taken it because the vessel's course was not set against the whale."

This follows an earlier rule change this year that removed habitat destruction from the definition of prohibited harm—a move the administration had justified as reducing unnecessary costs for landowners. But conservationists argue the latest directive takes that logic much further, essentially permitting preventable deaths as long as they are not the deliberate target.

Why advocates are concerned#

Environmental lawyer Ben Levitan of Earthjustice characterized the strategy as "incredibly sneaky and disingenuous," arguing that advocates were misled when the administration promised the earlier habitat change would not become a gateway to laxer enforcement.

The concern runs deep: incidental takes—animals killed unintentionally during normal commercial activity—represent the most common way endangered species perish. Before this shift, companies conducting projects in critical habitat had to perform environmental reviews and either modify their practices or obtain permits that required offsetting conservation investments elsewhere. The new framework removes that obligation when death is unintended, effectively gutting one of the Act's primary enforcement mechanisms.