Construction on a split four-lane highway on the US 93, a project to widen a four-mile stretch in northwest Arizona, is ...

The crossing between Detroit and Windsor, Ontario, is a flashpoint in the new trade war between the U.S. and Canada that will ...

Federal employees who resign can stop working and keep their pay and benefits until Sept. 30, the Trump administration said.

Central Arizona is preparing for more intense droughts and floods through major water projects with federal support.

Business groups working in Arizona took steps to pressure D.C. and brace for President Donald Trump's painful new tax on ...

Experts say the freight system could handle an increase in imports from Canada and Mexico, but there is little sign of a ...

Officials in Douglas — along the border between Arizona and the Mexican state of Sonora — have declared a state of emergency.

Navajo communities learn uranium dangers from comics while lacking emergency plans for new mining trucks crossing tribal ...

As major fires continue to rage in and around Los Angeles, help battling the blazes has come from across the country — and from across international borders, including from Canada and Mexico ... to ...