This is just the beginning,” one Defense official said about the deployment of active-duty troops to the border with Mexico.

Gov. Greg Abbott on Monday said he's sending more than 400 soldiers from Houston and Fort Worth to the U.S.-Mexico border to collaborate with Border Patrol agents, according to new reporting from the Texas Tribune.

Donald Trump sends troops to the southern border to deport illegal immigrants. Over a thousand arrests reported.

Troops are on the ground in San Diego as part of President Donald Trump’s promise to crack down on the situation at the southern border.

Mexico border as part of the military’s fulfillment of an order by President Donald Trump to make border security a top priority of the Defense Department.

More U.S. troops have arrived at the southern border as arrests from immigration raids continue to grow. CBS News' Jason Allen reports.