Federal judge halts Big Bend border wall construction, voids regulatory waivers

Key points

• U.S. District Judge Kathleen Cardone blocked construction within one mile of the Rio Grande and inside Big Bend National Park, citing likely success on the plaintiffs' constitutional claims.
• The ruling voids federal waivers that had allowed the Department of Homeland Security to bypass environmental and cultural resource protections to expedite construction.
• The Center for Biological Diversity, along with local landowners and environmental groups, argued the Big Bend sector is not a 'high illegal entry' zone, as it accounts for only 1-3% of border apprehensions.
• The injunction follows months of bipartisan opposition and comes just weeks after the first wall panels were erected in the region in mid-September.
• The Trump administration has not yet responded to the ruling, but CBP indicated it is working with the Department of Justice on next steps, including potential eminent domain cases against non-cooperating landowners.

Background

The Big Bend border wall project has been a contentious issue since January 2026, when the Trump administration announced a $46 billion expansion of border infrastructure. The project includes 30-foot-tall steel walls, vehicle barriers, roads, and surveillance technology. The Big Bend sector, which covers about a quarter of the U.S.-Mexico border, has historically seen the least traffic, with only 1.3% of apprehensions in the last fiscal year. The administration used federal waivers to bypass environmental laws, including the Endangered Species Act and the National Environmental Policy Act, to expedite construction. This ruling is the latest in a series of legal challenges to the project, with six lawsuits filed so far.

How outlets are covering it

The Center for Biological Diversity and local landowners, such as river guide Billy Miller and rancher Bill Guerra-Addington, argued that the wall would destroy the natural landscape and deprive them of their property. They emphasized that the Big Bend region is remote and rugged, serving as its own deterrent to illegal immigration. The Trump administration, through DHS and CBP, maintained that physical border infrastructure is necessary to achieve 'operational control' of the border, even in lightly-trafficked areas. CBP Commissioner Rodney Scott stated that the agency’s goal was to protect the national park from future cartel activity. The ruling was met with bipartisan opposition, with both Republicans and Democrats calling for the administration to stop construction in the national park.

Why it matters

The ruling is a significant legal victory for environmental groups and local landowners, halting a major component of the Trump administration’s border security strategy. It highlights the ongoing tensions between federal border enforcement and environmental protection, as well as the legal challenges to the use of federal waivers to bypass regulatory requirements. The decision may set a precedent for future border infrastructure projects and could influence the outcome of other pending lawsuits in the region.

What to watch

The Trump administration is expected to appeal the ruling, potentially taking the case to the U.S. Supreme Court. CBP is working with the Department of Justice on next steps, including potential eminent domain cases against non-cooperating landowners. The administration has also indicated it is reevaluating its plans for Big Bend National Park, but has not yet announced specific changes. The legal battle is likely to continue, with the outcome of the case potentially impacting the broader border wall project.