Texas starts border deployment with 250 troops

AUSTIN, Texas (AP) -- Texas has started sending troops to the U.S.-Mexico border, with 250 members of the National Guard expected to deploy within the next 72 hours.  

Brig. Gen. Tracy Norris, commander of the Texas Army National Guard, announced the deployment Friday.  

Norris said state and federal officials were still determining what the responsibilities of the Guard members would be, but that the Guard would work to support Border Patrol and other agents in the field.   

Texas already has 100 National Guard members stationed on the border under a state mission.