The Biden administration is moving to reinstate a Trump-era rule that lifted endangered species protections on gray wolves in the U.S.

Wolves were delisted from the Endangered Species Act (ESA) under President Trump in 2020, returning management of gray wolf populations to state and tribal wildlife professionals, according to a press release from the Department of Interior.

However, a federal judge reversed Trump’s decision in 2022 after environmental groups sued the Department of the Interior over the delisting, reinstating protection for the species.

Gray wolves are currently protected under the ESA as ‘threatened’ in Minnesota and ‘endangered’ in the remaining states, except for those in the Northern Rocky Mountain region, according to U.S. Fish and Wildlife Services. However, a new filing by the Biden administration suggests that the Trump-era ruling should be reinstated.

Attorneys with the Justice Department filed a motion with the 9th U.S. District Court of Appeals on Friday to reverse the court’s decision on the Trump-era delisting and lift ESA protections on gray wolves.

The filing with the U.S. Court of Appeals in San Francisco claimed that the court was wrong in overturning the Trump-era ruling on the species. 

‘The district court misunderstood the ESA’s clear mandate and compounded that error by imposing its own views of the science,’ court documents read. ‘Its decision invalidating the rule should be reversed.’

The Biden administration claimed in its 87-page filing that gray wolves no longer meet ESA standards of protection in that they are no longer considered ‘endangered’ or ‘threatened.’

Court documents referenced the 2020 ruling from Trump’s Department of Interior Fish and Wildlife Service that delisted the wolf species.

‘After that thorough analysis, the Service concluded that no configuration of gray wolves was threatened or endangered in all or a significant portion of its range. That analysis was well-reasoned and well-supported by the administrative record,’ the brief reads.

The move comes just months after a group of 20 House Republicans sent a letter to U.S. Fish and Wildlife Service (FWS) Director Martha Williams, urging the Biden administration to remove protections for the gray wolf, citing sometimes life-threatening conflicts with ranchers and farmers.

In February, FWS rejected requests from conservation groups to restore protection for gray wolves across the Northern Rocky Mountain region. 

Most recently, a bipartisan group of House lawmakers passed legislation in April to end federal protection for gray wolves and remove them from the endangered species list.