How many miles is the Wall on the Southern Border?

Answer 1

The southern border of the United States shared with Mexico spans almost 2,000 miles. Walls, fences, and virtual walls of sensors and cameras monitored by the U.S. Border Patrol are already built along one-third of the border (approximately 650 miles) to secure the border and cut down on illegal immigration.

Source(s): https://www.thoughtco.com/mexico-border-fence-pros...