Gov. Abbott deploys hundreds more troops to Texas-Mexico bordervia @CBSNewsTexas 
More than 400 additional Texas National Guard troops arrived at the #Texas_Mexico border Monday. 
#USA 
Governor Greg Abbott deployed the troops to the Rio Grande Valley, where he said they'll work side-by-side with U.S. Border Patrol agents to keep migrants from illegally entering the country. 

Some of those troops left from the U.S. Naval Air Station Joint Reserve Base in Fort Worth Monday morning. The others left from a base in Houston.