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 ...

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 ...

WASHINGTON— Conservation groups today asked a federal court to block construction of President Donald Trump’s border wall through protected wilderness in Arizona until a judge rules on a pending ...