<h1>Military deploys 7,600 troops across 480 miles of southern border under emergency powers</h1> The US military has expanded militarized zones covering nearly one-third of the southern border with Mexico, deploying over 7,600 troops across 480 miles in New Mexico, Texas, and Arizona. Under a national emergency declaration, troops can detain migrants who enter illegally, bypassing laws prohibiting military involvement in civilian law enforcement. Over 1,400 migrants face military trespassing charges with potential 18-month sentences. The expansion faces court challenges from civil rights groups and restricts public access to federal lands, affecting hunters and humanitarian groups. Border arrests have dropped to six-decade lows amid the increased military presence.