Search continues for Nancy Guthrie as Pima County sheriff reports no indication the 84-year-old Arizona woman was taken across U.S.-Mexico border.

How often do unauthorized drones cross from Mexico into the United States? Could an airport drone incident happen in Arizona?

Less than a mile from the U.S.-Mexico border, the mountain lies within Coronado National Memorial, a 5,000-acre stub of ...

Department of Homeland Security Secretary Kristi Noem is in southern Arizona on Wednesday where she will visit the U.S.-Mexico border.

Federal officials blamed the abrupt order to close airspace around El Paso, Texas for 10 days on an incursion by Mexican cartel drones, though it quickly became clear that civil aviation authorities ...

Authorities say a man who was involved in a human smuggling operation was shot Tuesday in an exchange of gunfire with the U.S ...

Initially touted as a "major announcement," Noem instead pointed to a 95% drop in border encounters over the past year. Dennis Welch reports.

While patrolling an area near the Douglas Port of Entry on Feb. 10, agents saw several people quickly retreating from the fence as the agents approached, officials said. When agents arrived, they ...

Homeland Security Secretary Kristi Noem visited the Arizona-Mexico border wall Wednesday morning, hosting a press conference ...