The US Supreme Court has allowed the Donald Trump administration to move ahead with plans to construct border barriers in the Big Bend region of Texas, overturning a lower court order that had temporarily stopped the project over concerns about its environmental and conservation impact.
In an emergency decision issued on Monday, the Court lifted the restrictions imposed by a federal judge in October, allowing construction to proceed while a legal challenge against the project remains pending.
The proposed infrastructure forms part of Trump’s broader effort to strengthen security along the US-Mexico border. However, extending the project into Big Bend National Park, located approximately 250 miles southeast of El Paso, has triggered opposition from environmental organisations, local residents and several Republican figures in Texas.
In its brief order, the Supreme Court observed that the government’s interests outweighed the aesthetic, recreational and environmental damage alleged by those challenging the construction.
Justice Ketanji Brown Jackson was the only member of the Court to publicly dissent from the decision. The Court has a 6-3 conservative majority.
The challenge was brought by the Center for Biological Diversity, a river guide operating in the Big Bend area and a group concerned about the impact of the construction on a historic church in Ruidosa, Texas. The group argued that the proposed work could threaten the church’s fragile adobe structure and cause lasting damage to the surrounding landscape.
At the centre of the dispute are waivers issued by the US Department of Homeland Security to accelerate the construction of border roads and barriers. These exemptions allow the administration to bypass several federal environmental and heritage protection requirements.
The waivers were issued under a 1996 federal law that authorises the government to expedite border barrier construction in areas identified as having high levels of illegal crossings.
The Supreme Court indicated that the legislation would likely prevent courts from examining the claims raised by the challengers.
Reacting to the ruling, the Center for Biological Diversity criticised the decision, arguing that it could allow contractors to clear protected desert land and carry out blasting operations near canyon walls before the legality of the project is fully determined.
Proposed barriers differ from those planned elsewhere along the border
Homeland Security Secretary Markwayne Mullin and former Secretary Kristi Noem issued the disputed waivers between February and July, identifying the region as an area experiencing significant illegal border crossings.
The administration has also pointed to drug seizures in the area and the activities of organised criminal groups operating across the border in Mexico as reasons for expanding security infrastructure.
According to the government’s proposal, most construction across the more than 300-mile Big Bend border sector would take place on privately owned land.
Within Big Bend National Park, the plan envisages approximately 17 miles of non-contiguous vehicle barriers. Unlike several other locations along the US-Mexico border, the park is not slated to receive the proposed 30-foot pedestrian wall.
Construction activities had already begun before the controversy intensified. Crews reportedly cleared sections of land for access roads and border infrastructure, prompting protests and legal challenges.
The administration subsequently suspended work in August following criticism from environmental groups, local authorities and some Republican politicians over the potential consequences for the park’s wildlife and natural landscape.
Environmental protections at the heart of the dispute
The challengers argued that without the exemptions, the project would have to comply with several federal laws, including the Endangered Species Act, the National Environmental Policy Act and the National Historic Preservation Act.
They maintained that the Homeland Security Department had exceeded its authority by issuing the waivers, particularly in light of the significant environmental and cultural importance of the Big Bend region.
Their challenge also relied on the Supreme Court’s major questions doctrine, under which executive agencies generally require clear congressional authorisation before taking actions involving issues of vast economic or political significance.
In October, US District Judge Kathleen Cardone in El Paso had halted the project, finding that the administration’s waivers lacked sufficiently clear congressional authorisation and violated the major questions doctrine.
The judge also questioned the government’s classification of Big Bend as an area with high levels of illegal entry, pointing out that the region records the lowest migrant apprehension rate along the entire US-Mexico border.
She observed that accepting the administration’s reasoning could effectively allow the same waiver authority to be applied across every section of the southern border.
The Justice Department challenged that conclusion before the Supreme Court, maintaining that Congress had expressly granted the Homeland Security Secretary the authority to waive legal requirements to facilitate border wall construction.
With the Supreme Court now lifting the lower court’s injunction, the administration can resume the disputed construction work while the underlying legal proceedings continue.
