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"This study underscores the cruelty and shortsightedness of the Trump administration's slashing of funding and weakening of protections for endangered species," said an expert at the Center for Biological Diversity.
On the heels of publishing a study that shows 2,204 species across the United States should be considered for protection under the Endangered Species Act, the Center for Biological Diversity on Wednesday sued President Donald Trump's administration for failing to release public records about efforts to dismantle the ESA.
"Americans want to live in a country where animals and plants on the brink of extinction get the protections they need to survive. The Trump administration is hiding information about its efforts to gut these protections," said Ryan Shannon, a senior attorney at the nonprofit, in a statement.
"Widespread public support for the Endangered Species Act makes the administration's secrecy around these rules all the more insidious," Shannon continued. "Trump hands out favors to his billionaire friends while ignoring the irreplaceable value of our nation’s endangered wildlife. This lawsuit seeks to bring that corruption out into the open."
Filed in federal court in Washington, DC, the Freedom of Information Act (FOIA) suit could make the departments of Commerce and the Interior, as well as the National Oceanic and Atmospheric Administration, National Marine Fisheries Service, and the US Fish and Wildlife Service (FWS), turn over documents about potential revisions to the ESA proposed in response to orders from Trump and Interior Secretary Doug Burgum.
"Thousands of plants and animals across America are at risk of extinction while they wait for the federal government to do something, anything, to help them."
The complaint warns that if the administration's proposed rules are implemented, they "will dismantle essential protections by, amongst other things, inserting economic considerations into the listing process, curtailing critical habitat designations, prohibiting habitat protections for species threatened by climate change, weakening consultation mandates, and removing nearly all protections for newly designated threatened species."
"On July 3, 2025, the center submitted FOIA requests to each defendant seeking records relating to the development of these proposed rules," the filing details. "The requested records are vital to understanding the basis, rationale, and likely impacts of the agencies' proposed rules. Such information is necessary for meaningful public participation in the rulemaking process."
"Without timely disclosure, the center and its members cannot effectively understand or respond to the agencies' proposed rules, thereby undermining FOIA's core purpose of ensuring government transparency and accountability," the complaint adds, noting that the center sent follow-up requests early last month.
The suit over Trump's "extinction plan" records followed publication of a study in which four experts at the center argued for protecting thousands more species under the landmark 1973 law—which, the analysis notes, "currently protects 1,682 species as endangered or threatened."
"According to the independent scientific organization NatureServe, however, there are more than 10,000 imperiled species in the United States that may need protection," explains the study, published in PeerJ. "One barrier to protecting recognized imperiled species is a lack of threats information."
The center's experts reviewed all species recognized NatureServe as "critically imperiled" or "imperiled" and identified 2,204 species "where there is sufficient threat information to indicate ESA protection may be warranted."
A majority of those species—1,320—are plants, followed by 309 insects, 115 terrestrial snails, 90 freshwater snails, 85 fish, 25 lichen and fungi, 23 reptiles and turtles, 21 amphibians, 14 birds, and various others.
Given that the FWS "has on average listed just 32 species per year since the law was passed," the analysis warns, "at this rate, most species currently recognized as imperiled and facing threats will not receive consideration for protection within any meaningful timeframe."

Noah Greenwald, a study co-author and co-director of endangered species at the Center for Biological Diversity, stressed in a Tuesday statement that "thousands of plants and animals across America are at risk of extinction while they wait for the federal government to do something, anything, to help them."
"This study underscores the cruelty and shortsightedness of the Trump administration's slashing of funding and weakening of protections for endangered species," Greenwald declared. "That so many species need help highlights just how much we're degrading the natural world at our own peril."
"Humans need clean air and water and a stable climate, just like the many species in decline," he added. "People are destroying the wild places where plants and animals live, and that habitat destruction remains the greatest threat to species' survival both in the United States and around the world.”
Habitat destruction threatens 92% of the 2,204 species, according to the analysis. Other notable threats include invasive species (33%), small population size (26%), climate change (18%), altered disturbance regime (12%), disease and predation (8%), over-utilization (7%), and inadequacy of existing regulations (4%).
Last week, in response to petitions from the center and other groups, the FWS announced that 10 species across the country—including the Olympic marmot, gray cat's eye plant, Alvord chub fish, Mount Pinos sooty grouse, and San Joaquin tiger beetle—warrant consideration for ESA protections.
"I'm relieved to see these 10 precious plants and animals move closer to the protection they so desperately need," said Greenwald. "Unfortunately they're joining a backlog of hundreds of species waiting for safeguards during an administration that didn't protect a single species last year—the first time that's happened since 1981. As the global extinction crisis deepens, imperiled wildlife need the Endangered Species Act's strong protections now more than ever."
Construction crews are creating what will be the longest unbroken stretch of border wall in an area of Arizona that serves as a critical wildlife corridor.
Across the world, efforts to reintroduce imperiled animals to their natural habitats have gained momentum, but in the Madrean Sky Islands of Arizona, jaguars are doing it on their own.
Less than a month ago, Chris Schnaufer, a citizen scientist volunteer with the University of Arizona Wild Cat Research and Conservation Center, and another volunteer, were checking one of their remote trail cameras. Schnaufer, a long-distance hiker, often got the center’s toughest assignments, and both men were tired when they reached the mountain camera site. They replaced batteries and collected the SD card and hiked back to the trailhead. That night, at home, Schnaufer scrolled through the images of deer, bear, bobcats, mountain lions, foxes, owls, skunks, and a coatimundi. And then, there it was, in the semidarkness of early morning, the striking image of a jaguar drinking from a waterhole. The photos showed its muscular shoulder and its distinctive inky-black rosettes.
When the University of Arizona Wild Cat Research and Conservation Center released the photographs of the jaguar roaming the rugged mountains of southern Arizona, it confirmed that it was a never-before-recorded big cat. Jaguars have their own unique markings, as singular as a human’s fingerprint, and this was one new to the center’s database. Though it has not yet identified its sex, the center is calling it Jaguar No. 5, dubbed Cinco, the fifth jaguar to be photographed in the Sky Islands since 2011, the second one discovered since 2023, and the ninth one spotted in the US since 1996.

When the photos were made public, and news agencies across the country buzzed with excitement about the future of the state’s wild jaguar population, Schnaufer still felt the existential thrill of knowing he had been hiking in jaguar country.
Three-quarters of a century ago, Aldo Leopold penned his essay “The Green Lagoons,” which chronicles a 1923 canoeing adventure in the Delta region of the Colorado River. He and his brother Carl hoped to “find sign of the… the great mottled jaguar, el tigre.” They “saw neither hide nor hair of him, but his personality pervaded the wilderness.”
While I was researching my book, Heart of the Jaguar, and backpacking sections of the Sky Islands, three jaguars called the Sky Islands home—Cochise, Sombra, and O:ṣhad Ñu:kudam. I never saw so much as a track, but what mattered most to me was what the presence of a big, spotted cat prowling the mountains of southern Arizona implied: a kind of wildness.

The Sky Islands, situated at the northern edge of a 5,000-mile jaguar range that extends as far south as Argentina, are indeed wild. More than a century ago, they were prime jaguar habitat. Some biologists and conservationists, including Susan Malusa, director of the Wild Cat Research and Conservation Center for the last 13 years, think they still are. “The picture of Jaguar No. 5 is a moment in time,” Malusa says. “But it’s part of a greater story, and that story is that the Sky Islands are part of the jaguar’s historical range. Jaguars wouldn’t be coming here if they weren’t finding what they need.”
The entire jaguar range is based on the principle of connection. Alan Rabinowitz, the celebrated zoologist and co-founder of Panthera, the global wild cat conservation organization, (who passed away in 2018), envisioned the jaguar realm as a mammal’s circulatory system. The core areas of jaguar production are its heart; the corridors linking them are its veins and arteries. A functioning system would nurture the species, while at the same time allowing nomadic, individual cats the freedom to spread their genetics across the corridor.
Susan Malusa believes it could be just a matter of time before other jaguars cross over from Mexico into the United States. “The cats are coming,” she says. “This is our chance to get it right; we have an obligation. Essentially, our job is not to screw it up.”
But screwing it up is exactly what we are doing. Currently, construction crews are dynamiting huge swaths of the unspoiled Coronado National Memorial and building hulking, 30-foot walls in the San Rafael Valley, creating what will be the longest unbroken stretch of border wall in an area of Arizona that serves as a critical wildlife corridor.
The Trump administration, which is not known for its love of wild places, waived the Endangered Species Act, the National Environmental Policy Act, and a host of other laws, to build a wall that will stop jaguars and dozens of other species in their tracks. And southern Arizona will be poorer for it. Apex predators like jaguars maintain ecosystem health, balance prey populations, and sustain biodiversity. They also change the spirit of the land. They contribute to what Aldo Leopold described as a “vast pulsing harmony.” And when they are gone, a “glory has departed.”
But perhaps in spite of the obstacles in their path, that glory is beginning to come back, as exemplified by Jaguar No.5.
The proposal "could seal the fate of animals that, without these protections, would disappear from the Earth," said the Sierra Club’s executive director.
Environmentalists are sounding the alarm about a slate of new proposals from the Trump administration to weaken the Endangered Species Act, which they say will put more imperiled species in danger to line the pockets of the wealthy.
On Wednesday, the Department of the Interior's Fish and Wildlife Service (FWS) announced that it would once again roll back several key provisions of the ESA. Many had been in place for decades before they were slashed during President Donald Trump's first term. They were then restored under former President Joe Biden.
"These revisions end years of legal confusion and regulatory overreach, delivering certainty to states, tribes, landowners, and businesses while ensuring conservation efforts remain grounded in sound science and common sense," said Interior Secretary Doug Burgum, a billionaire ally of the fossil fuel industry.
But some of the nation's leading environmental groups say the proposals will allow the government to flout science and approve new projects that will destroy the habitats of vulnerable creatures and accelerate the already worsening extinction crisis.
“The ESA is one of the world’s most powerful laws for conservation and is responsible for keeping 99% of listed species from extinction,” said Jane Davenport, senior attorney at Defenders of Wildlife.
The group said the changes "could accelerate the extinction crisis we face today." According to a 2023 investigation by the Montana Free Press, the ESA has prevented 291 species from going extinct since it was passed in 1973. At that point, around 40% of all animals and 34% of plants were considered at risk of extinction according to NatureServe, a nonprofit that collects conservation data.
“The ESA is only as effective as the regulations that implement it," Davenport said. “Rolling back these regulations risks reversing the ESA’s historic success and threatens the well-being of plant and animal species that pollinate our crops, generate medicine, keep our waterways clean, and support local economies.”
One of the rules being rolled back requires species to receive "blanket" protections when they are added to the list of threatened species. Instead of those blanket protections—which protect these newly-added species from killing, trapping, and other forms of harm—the FWS will instead create individual designations for each species.
According to Jackson Chiappinelli, a spokesperson for Earthjustice, some of the species that would lose protection under this rule would be the Florida manatee, California spotted owl, greater sage grouse, and monarch butterfly, which it said could remain unprotected for years after being listed.
Another major change would let the government consider "economic impacts" when deciding which habitats are required to be protected. In 1982, Congress modified the ESA to clarify that the secretary of the interior must make decisions "solely on the basis of the best scientific and commercial data available," an amendment specifically intended to prevent economic factors from overawing environmental concerns.
The Interior Department said "the revised framework provides transparency and predictability for landowners and project proponents while maintaining the service’s authority to ensure that exclusions will not result in species extinction."
But Chiappinelli contends that the change would "violate the letter of the law" and warns that "the federal government could decide against protecting an endangered species after considering lost revenue from prohibiting a golf course or hotel development to be built where the species lives."
"If finalized, the rules would bias listing decisions with unreliable economic analyses, obstruct the ability to list new protected species, and make it easier to remove those now on the federal endangered or threatened list," said Ian Brickey, a spokesperson for the Sierra Club.
The proposed rules would also reduce the requirements for other federal agencies to consult with wildlife agencies to determine whether their actions could harm critical habitats. It also eliminates the requirement for agencies to "offset" habitat damage when approving new projects, such as logging or drilling, that harm protected species.
“Without rigorous consultations,” Davenport said, “projects could push species like the northern spotted owl and Cook Inlet beluga whale closer to extinction.”
The new proposals follow several efforts by the Trump administration to weaken protections for endangered species. Earlier this year, it proposed weakening the half-century-old definition of what counts as "harm" to endangered species to exclude habitat destruction.
The Department of Agriculture, meanwhile, has proposed rescinding the 2001 "Roadless Rule," which has shielded nearly 45 million acres of protected national forest from logging, oil and gas drilling, and road construction.
Amid the government shutdown, the administration announced its intent to lay off more than 2,000 Interior Department employees, including 143 from the FWS, though a federal judge blocked those layoffs.
It also attempted to sneak a provision into July's One Big Beautiful Bill Act that would have mandated the sale of millions of acres of public lands, but it was stripped out in the Senate following fierce backlash.
"The Trump administration is stopping at nothing in its quest to put corporate polluters over people, wildlife and the environment," said Loren Blackford, the Sierra Club's executive director. "These regulations attempt to undermine the implementation of one of America’s bedrock environmental laws, and they could seal the fate of animals that, without these protections, would disappear from the Earth."