MEXICO BORDER · US WALL
Key Facts
- —What is happening The Trump administration asked the US Supreme Court on Wednesday, 21 October, to lift a judge’s order that halts border wall construction across the Big Bend region of Texas.
- —Why it matters The ruling stops work across a project area of about 500 miles, roughly a quarter of the US-Mexico border, in a flagship policy backed by US$46 billion from Congress.
- —The numbers The Big Bend sector spans 517 miles but had 1.3% of last year’s apprehensions. The government says a pause costs at least US$462,800 a day.
- —Who is who US District Judge Kathleen Cardone in El Paso issued the order. Homeland Security Secretary Markwayne Mullin is the defendant, and the Center for Biological Diversity leads the plaintiffs.
- —What to watch Whether the Supreme Court grants an emergency stay or asks for a reply, and whether Customs and Border Protection narrows its plans inside Big Bend National Park.
- —Power Index Mexico ranks 2nd of 14 in The Rio Times Latin America Power Index, with 71.4 points (October 2026 edition).
- —What it means for you For Americans, the case decides how fast taxpayer-funded barrier work can resume on the Rio Grande and how far a Homeland Security waiver can override environmental law.
The Trump administration wants the Supreme Court to lift a judge’s halt on Big Bend wall work. The order covers about 500 miles of Texas border.
The Trump administration asked the US Supreme Court on Wednesday, 21 October, to restart border wall work in Big Bend, Texas. The emergency request targets an order issued on Friday, 2 October.
US District Judge Kathleen Cardone in El Paso halted work across about 500 miles beside the Rio Grande, the border with Mexico. It matters because US taxpayers fund the wall, and the case tests how far Homeland Security can waive environmental laws.
What the Big Bend Wall Order Says
Judge Cardone granted a preliminary injunction, a pause while the lawsuit continues. She found the plaintiffs likely to win a “major questions” claim, which says Congress must clearly authorise sweeping executive powers.
Texas Public Radio reported that the order covers land within one mile of the Rio Grande and inside state and national parks. It includes Big Bend National Park, and it suspends the federal waivers while the pause lasts.
The Center for Biological Diversity, an environmental group, sued in April with a church-preservation group and a river guide. The Center for Immigration Studies lists the case as Friends of the Ruidosa Church against Mullin.
Why Waivers Are at the Centre of the Case
A 1996 law lets the Homeland Security secretary waive legal requirements in areas of “high illegal entry”. The government says Big Bend qualifies, arguing a gap could funnel crossings there once the rest is walled.
The Center for Immigration Studies lists determinations on 17 February, for 250 miles, and 15 May, for the park and 180 more. The waivers set aside laws including the Endangered Species Act.
Opponents say Big Bend is remote and rugged, with little illegal crossing. Texas Public Radio reported that the sector is 28.5% of the border’s miles but had 1.3% of last year’s apprehensions.
The government says a 1996 law allows the waivers and crossings could shift to Big Bend. Law360 reported that the Homeland Security Department also argues the district court lacked jurisdiction to pause the project.
Costs, Scale and the US$46 Billion Programme
Congress allocated US$46 billion last summer to Homeland Security to finish the wall, the Associated Press reported. The design mixes 30-foot steel bollard walls, vehicle barriers and surveillance technology along a border of roughly 2,000 miles.
Customs and Border Protection told the court a pause costs at least US$462,800 a day, Texas Public Radio reported on 9 October. Pulling workers and equipment out and back could cost up to US$7 million, the same filing said.
The government also calls the harm to Big Bend National Park “speculative”, because the agency is “actively considering” a smaller project. Texas Public Radio reported that the government called no witnesses at the hearing, according to the plaintiffs’ lawyer.
Bulldozers were seen clearing land in the park in August. Opponents include ranchers, residents and business owners.
What Happens at the Supreme Court
News reports say the appeal skips the appeals court because of how the 1996 law is written. The justices can grant a stay, deny it or ask the plaintiffs to respond first.
Plaintiffs’ lawyer Dustin Rynders called an earlier government request to the judge a “hail mary”. The plaintiffs’ reply to the Supreme Court had not been reported by Thursday, 22 October.
What It Means for US Readers
Taxpayers fund the barrier, so the ruling decides when roughly 500 miles of planned work can resume. Contractors on the five Big Bend projects face either a long pause or a quick restart.
Landowners such as Bill Addington of Hudspeth County testified at the hearing. See Rio Times reports on US border arrests and the wall, Mexico’s stance on deportations and the North America trade pact.
What Is Not Known
The Supreme Court docket number and the full text of the government’s application were not available at the time of writing. The 21 October filing date and the arguments rest on AP, Forbes México and paywalled Law360.
Mexico’s government had not commented on the filing in the sources checked. Forbes México put the Big Bend project at US$1.7 billion, but no US source or court filing found gives that cost.
Accounts differ on small details, such as the sector length of 510 or 517 miles and the river guide’s first name. Reports also differ on whether the 1.3% apprehension figure refers to the sector or to the wider border.
What Comes Next
The Supreme Court will decide whether to grant the stay, and its answer would not settle the lawsuit itself. Judge Cardone’s case continues, and a stay would only let construction resume while it does.
A denial would keep the injunction in place and leave the waivers suspended for the sector. Neither outcome decides how large any wall inside the park would be.
Frequently Asked Questions
What did the Trump administration ask the Supreme Court to do?
It asked the justices to lift a federal judge’s 2 October order that halted border wall work in the Big Bend region. The request was filed on Wednesday, 21 October.
Why was the wall halted?
Judge Kathleen Cardone found the plaintiffs likely to win a claim that the Homeland Security waivers exceeded the secretary’s authority. The pause lasts while the lawsuit proceeds.
How big is the Big Bend project area?
Press reports put it at about 500 miles, roughly a quarter of the US-Mexico border. The Big Bend sector itself is listed at 517 miles.
Who is suing over the Big Bend wall?
The Center for Biological Diversity, Friends of the Ruidosa Church and a Rio Grande river guide brought the case. The Texas Civil Rights Project represents them.
How much does the wall programme cost?
Congress gave Homeland Security US$46 billion last summer to finish the border wall. The government says pausing Big Bend alone costs at least US$462,800 a day.
Sources: Forbes México, 21 October; Texas Public Radio, 4 October; Texas Public Radio, 9 October; Center for Immigration Studies; Texas Tribune, 16 April; Law360, 21 October; AP via ClickOnDetroit, 21 October (all accessed 22 October 2026).
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief