The news tonight is that mayors of various "sanctuary cities" are responding to his plan by standing up to him, saying in effect, "To hell with your policy, we are determined to protect the people who live within our cities who are honest, hard working, and part of our community, regardless of where they came from or how they got here."
So this is where it really starts to get interesting. This is pretty much what I predicted. Power is slowly ebbing away from Washington D.C. and is being taken up by the states and municipalities more and more as we watch.
So, I know many people who want to fight President Trump. OK, there is some merit to direct confrontation. But what I think is more interesting is to support your mayor (or Town Manager or whatever you have) in doing right by the people who live in your city or community. This is not just political, this means working to develop practical means to welcome and support those who need it most, just as if they had just lost their homes to a tornado or some other disaster.