Construction of the border wall in southern Arizona threatens several historic sites sacred to Indigenous peoples.

This video created with the assistance of AI. In 2019, the first Trump administration constructed almost 100 miles of border wall through a pair of national park sites in Arizona prized for their ...

Wildlife advocates say wolves like Cedar could soon be trapped on one side of the border or the other, unable to roam.

The sun sets over the Rio Grande at Big Bend Ranch State Park in Terlingua, Texas, on March 3. (Photos by Thomas Simonetti/For The Washington Post) The aggressive pace of expansion has alarmed ...

“Build the wall” became more than a campaign slogan. President Trump was very serious about keeping his promises to the American people, and border security was a top commitment. The administration ...

Remote wildlife cameras recently captured a rare and endangered jaguar crossing the Arizona borderlands.

The Department of Homeland Security has closed the southernmost mile of the Arizona National Scenic Trail for border wall construction. The closure will permanently block public access to the trail's ...

New border wall construction could make it even more difficult for wolves and other wildlife to continue roaming their cross-border ranges.