Armed troops patrolling for migrants have become a familiar sight in Eagle Pass, Texas. Accusing Biden of failing to protect Texas from a migrant "invasion," Abbott sent National Guard troops to Eagle Pass.

Four military police units from Texas are among as many as 1,500 active-duty troops bound for the nation’s southern border to “bolster security,” military leaders said Friday.

U.S. officials say active duty military troops are arriving in El Paso, Texas, and in San Diego on Thursday evening.