The U.S. Army will take control of almost 110,000 acres of federal land along the U.S.-Mexico border to support Border Patrol operations.

U.S. Army soldiers will soon be patrolling a 170-mile buffer zone along the southern border with Mexico in a newly created "National Defense Area" in Arizona and New Mexico. It's part of the Trump administration's efforts to use the U.S. military to stop the flow of undocumented migrants into the United States.