As for that part. He's not going to stop people.

Technically we're getting free labor out of angry Americans. That is capitalism at it's finest. I'm nit sure why Republicans would stay short sighted on this one though. Eventually they will be in power again. The power to declare a total shutdown of the border would be easier. It's what they want. There's a million ways to extend it. People might have to hold on for a few years, but after that, they could shut the border down for several years.