Attorney General Brown Co-Leads Comment Letter Opposing Federal Government’s Proposal to Significantly Weaken the Federal Endangered Species Act

Published: 5/19/2025

​​FOR IMMEDIATE RELEASE ​

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BALTIMORE, MD – Attorney General Anthony G. Brown today co-led a coalition of 16 attorneys general in sending a comment letter​ to the Trump administration opposing a proposed rule by the United States Fish and Wildlife Service and the National Marine Fisheries Service (collectively, the Services) to rescind the regulatory definitions of “harm” under the federal Endangered Species Act (ESA). Those regulations currently protect imperiled species from habitat degradation that significantly interferes with essential biological functions like feeding and reproduction. The proposal would eliminate those protections, leaving an ominous gap in the regulations that protect our most vulnerable species. 

“This weakening of habitat protections under the Endangered Species Act puts Maryland's natural resources and the many species that rely on the Chesapeake Bay at serious risk,” said Attorney General Brown. “We will strongly oppose any effort to roll back these essential environmental protections that have helped save wildlife for over 50 years.” 

The ESA has been recognized as “the most comprehensive legislation for the preservation of endangered species ever enacted by any nation.” Enacted by Congress in 1973 with bipartisan support, the ESA provides a national program for the protection and recovery of endangered and threatened species and their habitats. Since then, the ESA has prevented the extinction of 99% of species receiving its protection and helped restore populations of numerous others, including our national bird and symbol, the bald eagle.

In their letter, the attorneys general argue that finalizing the proposed rule would significantly reduce protections for vulnerable species making it much harder to save such species from extinction, which is contrary to the plain language and purposes of the ESA. The proposed rescission also contradicts longstanding Supreme Court precedent and other case law upholding the existing definitions. 

The recovery of many of Maryland’s most imperiled species requires strong federal action to ensure conservation measures are implemented across a species’ entire range. 

Maryland Attorney General Anthony Brown co-led the letter with California Attorney General Rob Bonta and Massachusetts Attorney General Andrea Joy Campbell. They were joined by the attorneys general of Arizona, Connecticut, Colorado, Illinois, Maine, Minnesota, New Jersey, New Mexico, New York, Oregon, Rhode Island, Vermont, and Washington. 

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