From the DPS website:
The Texas Rangers currently coordinate border security operations through six (6) Joint Operations and Intelligence Centers (JOICs) along the Texas-Mexico border and Coastal Bend area of the state.
I’m pretty sure a lot of other Texas resources are on the border including game wardens, drones, helicopters and a lot of DPS troopers like HG said.
Oh, and these cool badass boats.
Thanks for the information about the Rangers. Any sign of Perry calling out the National Guard?