Thousands of additional active duty US troops are being ordered to the southern US border with Mexico, just two days after President Donald Trump mandated that the US military step up its presence there,

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.

Texas Gov. Greg Abbott is sending aircraft, helicopters and 400 specially trained National Guard soldiers to assist the Border Patrol.

More than 400 additional Texas National Guard troops arrived at the Texas-Mexico border on Monday. Texas Gov. Greg Abbott deployed the troops to the Rio Grande Valley, where he said they'll work side-by-side with U.

The troops, part of a unit called the Texas Tactical Border Force, will join those already deployed to the border through Texas' Operation Lone Star.

The new Texas National Guard and military troops sent recently to the Rio Grande Valley will assist Border Patrol agents on the border of South Texas. They were holding training exercises Tuesday at a park in Mission,

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.