Arizona's water crosses all sorts of boundaries, but leaders must be willing to cross borders to solve problems, experts say.

Mexico border — 26 in Arizona ... when Mexico ceded 55% of its territory to the United States, and two temporary commissions were sent to map and demarcate the new boundary.

Following the Mexican-American War in the mid-1800s, the United States claimed parts of modern-day Arizona, New Mexico, California ... with farmers while they transition into this new, unknown ...

Gianni Cipriano for The New York Times Supported by ... claims an age about 1,750 years older. The United States was still considered mission territory for the Catholic Church as recently as ...

The Department of Homeland Security bypassed environmental regulations to begin building 36 miles of barrier along the ...

PHOENIX (AZFamily) — The U.S. government is pushing through construction of new border wall portions along southern Arizona and New Mexico. Department of Homeland Security Secretary Kristi Noem issued ...

Mexico is suing Google for labeling the Gulf of Mexico as the "Gulf of America" on its US Maps version. Mexico's president Claudia Sheinbaum announced the legal action following a US law ...

The Arizona Independent Redistricting Commission adopted drafts of new congressional and legislative district maps Thursday with only a few partisan disputes. The five-member Arizona Independent ...

In No. 21 Arizona's 61-39 season-opening win over the New Mexico Lobos at Arizona Stadium on Saturday, UA star wide receiver Tetairoa McMillan erupted for 10 catches for 304 yards — a single-gam ...

The sweeping law enacted in March puts New Mexico at the forefront of a growing movement to rethink states’ traditional model of wildlife management. “We came from a place of extreme ...

AND THAT’S WHY THEY SAY THIS PARTNERSHIP WITH THE FOSTER ALLIANCE, AN ARIZONA ORGANIZATION, CAN MAKE THAT POSSIBLE IN NEW MEXICO, OVER 2000 CHILDREN ARE IN THE FOSTER SYSTEM, WITH ONLY 1000 ...

With visibility severely reduced at milepost 376, the Arizona Department of Transportation closed 60-plus miles of the interstate in both directions from east of Willcox to Lordsburg, New Mexico.