The Trump administration has moved heavy-duty construction equipment into Big Bend National Park and started work on a border security project despite bipartisan concern about damage to the environmentally sensitive area of west Texas.
Bulldozers and other machinery appeared last week in the remote park, which sits about 300 miles southeast of El Paso and includes one of the least crossed stretches of the U.S.-Mexico border, according to Laiken Jordahl, a national public lands advocate for the Center for Biological Diversity, which has sued the Biden and Trump administrations seeking to halt border-wall construction.
Jordahl said he and other activists watching the work have seen bulldozers plowing through vegetation “clearing a path for the barriers, the wall or whatever is going in.”
U.S. Customs and Border Protection “is building an access road, improving existing roads, installing detection technology and placing vehicle barriers in limited, strategic locations,” Commissioner Rodney Scott, the agency’s top official, said in an email Thursday. “We are securing this park to protect its legacy — keeping it safe, secure, and pristine so American families can enjoy the beauty of our country, free from fear of cartel activity.”
The Trump administration is moving ahead with the project over the objections of not just environmental activists and others opposed to the crackdown on immigration, but also local residents, many of them Republicans who otherwise support President Trump, as well as retiring GOP Sen. John Cornyn. They note that the rugged terrain — mostly desert with steep ravines and scrubland covered in creosote bushes and prickly pear cactus — serves as a natural barrier from anyone trying to cross from Mexico, making the infrastructure unnecessary.
They say the construction and equipment will mar the landscape and imperil the animals who live in the park, including javelinas, ringtails, mountain lions and desert bighorn sheep.
In June, Homeland Security Secretary Markwayne Mullin formally waived all environmental laws and reviews that could otherwise slow any work in the park.
Texas Gov. Greg Abbott’s office has said he supports using every tool available to help deter illegal immigration, including deploying technology in rugged and isolated areas such as Big Bend.
Trump has long pledged to build a wall along all of the roughly 2,000-mile U.S. border with Mexico, though Customs and Border Protection has repeatedly said it wouldn’t build his preferred 30-foot barrier in the environmentally sensitive park.
Earlier this year, the administration issued a $1.7-billion contract for the project in Big Bend. The vehicle barriers set to be installed are typically 5-foot steel posts set a few feet apart and intended to block cars or trucks from crossing.
The park is part of the Border Patrol’s Big Bend Sector, which has for decades been one of the least crossed areas along the whole of the border. In June, agents there made 148 arrests. Since Oct. 1, the start of the government’s fiscal year, agents have made 1,509 arrests, about 1.5% of all apprehensions along the Mexican border, according to Customs and Border Patrol arrest data.
Brandon Herrera, the GOP candidate for a House district that includes the park, met with White House and Department of Homeland Security officials in March to pitch a less-invasive “alternative solution.”
In a letter this month, Cornyn asked Mullin to meet with local officials who have voiced concerns over the project, citing complaints about its effect on the region’s natural beauty, wildlife, cultural sites and economy. Cornyn wrote that his “constituents believe that the 1,000-foot riverbank cliffs and remote Big Bend terrain offers its own source of deterrence for any illegal migrants crossing into the United States.”
James Talarico, a Democratic state representative running to succeed Cornyn in the U.S. Senate, echoed the Republican’s concerns and called the project irresponsible spending.
“This monument to corruption represents wasteful, irresponsible government spending that no Texan asked for, enriching wealthy contractors without making Texans one bit safer,” he said.
Texas’ Big Bend region relies on tourism as an economic driver, with more than 568,000 visitors to the national park in 2025. Local businesses in Terlingua, a small gateway town west of the park, have revolted against the proposed wall, with workers at one restaurant wearing shirts that read “No Al Muro” — No to the Wall.
Caldwell and Lovinger write for Bloomberg.
