Rugged mountain ranges in southeastern Arizona halted the march of a steel border wall during the first Trump presidency.

Even as border crossings drop, Gov. Greg Abbott continues to build more border walls, now targeting Laredo, a city that has ...

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 ...