The order will deploy 1,500 troops to build physical barriers, but they will not be used for law enforcement, a military official says.

Mexican drug gangs are a driving force behind the U.S. fentanyl crisis and Trump vowed to crack down on cartels during his successful presidential campaign.

Starr County residents told Fox News Digital they see the border and immigration as top issues going into the president's second administration.

President Donald Trump on Monday kicked off his sweeping immigration crackdown, tasking the U.S. military with aiding border security, issuing a broad ban on asylum and taking steps to restrict citizenship for children born on U.