It is unclear how many soldiers have been deployed, as the Texas Military Department, Department of Public Safety, and Governor Greg Abbott have not responded to requests for comment.
The Supreme Court has temporarily blocked the Biden administration from ending its policy of rapidly expelling migrants at the US-Mexico border, after a request from Republican officials in 19 states.
El Paso, Texas has declared a state of emergency and requested additional resources from the state due to a surge in border crossings and overwhelmed law enforcement.
California Governor Gavin Newsom (D) cautioned his fellow Democrats on softening federal immigration policy after visiting the southern border on Monday.
A video shared by Fox News reporter showed more than 1,000 illegal immigrants entering the United States from Mexico during the night, crossing into El Paso, Texas.