Currently, 654 miles of the 1,900-mile border with Mexico is fenced, with single, double or triple fences. The second line of fencing in San Diego, about 18 feet tall, has been breached nearly 2,000 times in the last three years, Villareal said.
Even if Trump’s wall never gets funded, Villareal said, the border patrol might incorporate one or more of the new wall designs as it replaces worn sections of the existing fence.
