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Trump administration’s $46 billion ‘smart wall’ races ahead on the US-Mexico border
CBP is adding autonomous towers, sensors and roads as it uses the new funding to build hundreds more miles of barrier.
President Donald Trump's administration is building a $46 billion "smart wall" along the U.S.-Mexico border, combining 30-foot steel fencing with sophisticated surveillance technology including sensors, cameras, and towers.
Customs and Border Protection is shifting toward an intelligence-driven operation after Congress approved massive funding to deter migration across the roughly 2,000-mile border following Trump's return to office last year.
As of mid-June 2026, CBP has erected 74 miles of barriers and is deploying 95 additional autonomous towers, while utilizing 15-foot cylinder-shaped buoys along the Rio Grande to prevent crossings.
Residents like Nayda Alvarez report surveillance towers appearing on private land, while the Electronic Frontier Foundation warns the technology creates a "hostile environment" infringing on privacy rights.
Homeland Security Secretary Markwayne Mullin expects preliminary construction to finish by next year, though watchdog group Taxpayers for Common Sense demands more "robust evaluation" of costs and effectiveness.