Donald Trump gained ground in all four counties on the Arizona-Mexico border. Here's where his margin improved the most.

Arizona voters are set to decide whether to let local police arrest migrants suspected of illegally entering the state from ...

A completed wall would send a strong message that people wanting to come to the U.S. must make a legal application--and wait ...

That led to the TV images of flows of migrants finding the gaps and holes in the border wall and then surrendering to Border ...

Proposition 314, known as the "Secure the Border Act", seeks to prevent illegal border crossings through Mexico's six ports ...

Arizona may once again be at odds with the federal government over immigration enforcement, as voters appear to support a GOP ...

Communities like Nogales are again in the spotlight with Trump’s re-election, and his new promise to carry out what would be ...

President-elect Donald Trump made the border and immigration a key focus of his campaign, and promised to conduct mass ...

Gallego's win is the fourth straight for Democrats after decades of defeats and comes in a disappointing cycle for the party ...

A ballot measure in Arizona would give more power to local officials when it comes to enforcing immigration law.

Voters also nixed a proposal to reduce the wages of workers who earn tips and decided to continue holding elections to retain ...

A drive with Tucson Samaritans along 21 miles of the rust-colored, slatted border wall in Arizona highlights the economic, political and human complexities in stopping a flow of people at a time ...