Customs and Border Protection has erected 74 miles of new steel fencing along the U.S.-Mexico border as of mid-June 2026, and the agency says it is putting up six more miles every week. The construction is only part of a broader effort that pairs 30-foot-tall bollard barriers with cameras, sensors, autonomous surveillance towers, fiberoptic cables, and river buoys, all funded by the $46 billion Congress appropriated for immigration enforcement in last summer's spending bill.
CBP Commissioner Rodney Scott told lawmakers in recent congressional testimony that the project goes well beyond concrete and steel. The Associated Press reported that Scott described the initiative as a layered system designed to multiply the effectiveness of agents on the ground.
"It's a smart wall. It's not just a barrier. It maximizes the use of our most valuable resource, which is our agents."
That framing, technology plus physical barrier, not one or the other, marks a deliberate break from earlier federal efforts that tried to secure the border with gadgets alone and failed.
The first wave of contracts is already out the door. Just The News reported that the Department of Homeland Security and CBP awarded roughly $4.5 billion across ten projects spanning California, Arizona, New Mexico, and Texas. Those contracts were the first funded under the One Big Beautiful Bill signed by President Trump.
Newsmax reported that the ten contracts, awarded between September 15 and September 30 of 2025, will add 230 miles of physical barriers and nearly 400 miles of advanced surveillance technology. Individual project values ranged from $574 million for eight miles in the El Centro sector to $850 million for 42 miles near El Paso.
Homeland Security Secretary Markwayne Mullin said recently that a preliminary section of the wall will be finished by "this time next year." The administration's broader plan envisions physical barriers along more than 1,400 miles of the roughly 2,000-mile border, the Washington Examiner reported. The remaining 535 miles, terrain so rugged it serves as a natural barrier, will receive detection technology instead of steel.
Fixed surveillance towers with video, infrared, and radar capabilities can scan roughly eight miles in every direction. The congressional spending bill requires CBP to buy only autonomous versions of those towers, and the agency is deploying 95 additional units. Along Texas river stretches, cylinder-shaped buoys measuring 12 to 15 feet are being dropped into the water. Fiberoptic cables, ground sensors, trail cameras, and upgraded lighting round out the surveillance layer.
At a recent border security expo in Phoenix, Sintela CEO Magnus McEwen-King described how his company's fiberoptic cable system, already under contract with CBP, conforms to the landscape:
"We follow the contour of the land. We go through trees. We go down into the river banks. We can go absolutely everywhere."
CBP is also retrofitting hundreds of miles of wall built before Trump returned to office, adding technology, lights, and patrol roads to sections that previously stood as bare steel.
Scott summed up the philosophy at a broader level during his congressional appearance. For years, he said, Washington talked about border security but failed to deliver.
"The Smart Wall means more miles of barriers, more technology, and more capability for our agents on the ground. This is how you take control of the border."
The smart-wall concept is not new. Under President Barack Obama in 2011, then-Homeland Security Secretary Janet Napolitano pulled the plug on a "virtual wall" project that was supposed to integrate technology along the border. It ran over budget, fell behind schedule, and suffered persistent technological glitches. That failure became a cautionary tale about relying on sensors and cameras without a physical barrier to slow crossers down.
The current approach pairs both. The 30-foot bollard fencing buys agents time; the technology tells them where to go. Whether the combination works at this scale, and whether the government can manage tens of billions in contracts without the waste that sank the 2011 effort, remains to be seen. CBP has cited an internal "oversight mechanism" to push back on spending critics, though the agency has not detailed what that mechanism involves.
Advocacy groups and civil-liberties organizations have raised objections ranging from privacy concerns to environmental damage. Ricky Garza, border policy counsel for the Southern Border Communities Coalition, framed the expansion in sweeping terms:
"We are seeing a massive expansion of surveillance and surveillance technology across the borderlands."
Garza also said the coalition has heard from residents who found ground sensors placed on their private property without their consent. His organization argues that surveillance technology pushes migrants into more dangerous crossing routes, a claim the administration has not publicly addressed.
The Electronic Frontier Foundation published a guide on the types of surveillance towers in use along the southern border. Dave Maass, the foundation's director of investigations, characterized the border area as "a hostile environment" for both locals and would-be migrants.
Josh Sewell, director of research and policy at Taxpayers for Common Sense, a nonpartisan watchdog, pressed a different angle. His organization wants more evaluation of whether the technologies being deployed actually deliver results, and criticized the Trump administration for insufficient oversight of how the $46 billion is being spent.
Nayda Alvarez and her relatives own land along the Rio Grande roughly 125 miles inland from the Gulf of Mexico. She told the AP that cameras have appeared on her family's property. Just last week, she spotted a surveillance tower about a quarter of a mile from her house.
"Are we expecting a war or something? It doesn't make me feel safer."
In the Big Bend area of southern Texas, where the border runs through state and national parkland and a wildlife area, a bipartisan coalition mobilized against plans for a 30-foot bollard wall. CBP recently announced revised plans for the region: no tall wall, but patrol roads, car-stopping barriers, and detection technologies instead. Clara Benson, co-founder of the No Big Bend Wall coalition, acknowledged the change but said the anxiety has not lifted.
"There's still a lot of fear and dread that the plan is still going to be quite damaging."
Benson also raised concerns about bright border lights polluting the dark skies that draw visitors, and scientific researchers, to the remote area.
The political ground for a $46 billion border investment was cleared during the Biden administration, when thousands of people sought to cross the border each day and immigration became a defining political flashpoint. Crossing numbers began to taper off shortly before Trump returned to office and slowed to a trickle after his broader immigration crackdown took effect.
That sequence matters. The wall has been Trump's signature issue since he first ran for president. But the scale of the current effort, autonomous towers mandated by statute, fiberoptic sensor networks, AI-integrated surveillance, and the largest single border-security appropriation in American history, goes far beyond what he achieved in his first term. Congress gave him the money. CBP is spending it at pace. And the physical results are visible along hundreds of miles of the Rio Grande and the desert Southwest.
Several things remain unclear. How many total miles of wall does CBP aim to complete under this funding, and on what timeline? What exactly is the "oversight mechanism" the agency invokes when questioned about contract management? And will the autonomous surveillance towers, mandated by Congress, not chosen by the agency, perform better than the systems that failed under the Obama-era virtual wall? Those answers will determine whether $46 billion bought border security or just border spending.
The wall's critics will keep filing complaints. Its supporters will keep pointing to falling crossing numbers. But the concrete question is simpler than either side wants to admit: does the system work, and is the money being tracked? If the Trump administration can answer yes to both, the smart wall won't just be a campaign promise fulfilled, it will be the template for how a serious country secures its border.
