When Gov. Doug Ducey was stuck in a six-way Republican primary one year ago, he promised to “fight back with every resource at my command” to secure the state’s border with Mexico. “Fencing, satellites, guardsmen, more police and prosecutors,” Ducey ...

The number of immigrants crossing the border illegally into the U.S. appears to be on the rise again after dropping during the recession.

Tough-talking Arizona Sheriff Joe Arpaio is warning civilians who embark on armed patrols in remote desert terrain that they could end up with "30 rounds fired into" them by one of his deputies.

A new report shows the U.S. Border Patrol's Tucson sector remains the busiest along the U.S. Mexican border but concludes the agency hasn't set goals to improve security.

Touring an area where a rancher was killed, a crime investigators suspect was committed by someone in the country illegally, Gov. Jan Brewer and New Mexico Gov. Bill Richardson called Wednesday for the Obama administration to do more to secure ...