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

A week before the EPA’s Lee Zeldin visits San Diego, councilmembers say they want feds to leverage water sales and border ...

U.S. Customs and Border Protection plans to build nearly 25 miles of new border wall in the San Rafael Valley, sealing up the "biological hotspot" in Southern Arizona as part ...

The lower section of the Rio Grande in South Texas has been named one of the most endangered rivers in the United States.

Longtime residents often crossed from one side of the border to the other without a second thought. That day, however, would ...