Is Trump's National Guard deployment an illegal use of presidential power?

 President Trump has ordered the deployment of National Guard troops in California to protect and assist ICE agents carrying out his immigration crackdown using the powers given to him in Title 10 of the United States legal code. The deployment’s legality is under heavy scrutiny with legal challenges expected to come thick and fast. Today we breakdown how the president took control of the National Guard, the legal issues surrounding it, and what might happen next.