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 ...

The first Trump administration built long segments of steel wall on Arizona's border. Conservationists fear wildlife will suffer if work resumes.

The project envisions a continuous drone network from Norway to Poland to counter Russian incursions and unconventional ...

President Trump authorized the military to take control of federal land stretching across three states at the southern border ...

Rugged mountain ranges in southeastern Arizona halted the march of a steel border wall during the first Trump presidency. Wildlife advocates say it shows the importance of animal travel routes.

To the east: a border wall stretching for 70 miles from the foothills almost to New Mexico blocks the path of these rarest of American mammals, especially at what might otherwise be prime cat ...