During his first term, President Trump’s signature border security policy involved building a barrier along the southern ...

The wall is being built through the Cabeza Prieta National Wildlife Refuge, home to the endangered Sonoran pronghorn, and the rugged Tinajas Altas Mountains in the Barry M. Goldwater Bombing Range ...

PHOENIX — A newly built segment of the southern Arizona border wall may bolster national security, but it will endanger one of the rarest desert fish in the U.S., according to the Center for ...

YUMA, AZ (AZFamily)—A new study in Arizona found that the U.S.-Mexico border wall reduces wildlife crossings by 86% compared to areas along the border that are unwalled. With the incoming Trump ...

Video footage shared with the Center for Biological Diversity seems to show construction equipment leveling Arizona mountains in critical habitat for endangered jaguars, in an apparent violation of ...