The Defense Department says it has designated a second stretch on the U.S. border with Mexico as a military zone to enforce immigration laws.

The U.S. Department of Justice has begun the first prosecutions of migrants for illegally entering a military zone created along the U.S.-Mexico border as part of President Donald Trump's immigration crackdown,

The Pentagon is set to control the Roosevelt Reservation, a 170-mile stretch at the southern border, where troops can detain migrants as trespassers.