The 400 members of a special tactical unit left bases in Houston and Fort Worth on Monday morning, according to the governor’s office.

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.

Texas Gov. Greg Abbott (R) is sending hundreds of soldiers in the Texas Military Department to work with the U.S. Border Patrol in the Rio Grande Valley.