Your right. Let everyone who is not happy about this sit it out in 2020. Let Trump lose the states listed. That will teach him.
Only dim witted and shallow thinking so-called “Conservatives” would abandon Trump over this one issue to watch a Bernie, Corey, or Kamala win in 2020.
If Trump is going to blow out legal immigration, kowtow to greedy lying corporatists, and suppress the job market and wages for Americans then what’s the point if his Presidency? Hell, Romney will due if you are satisfied with that.
I'm not letting anyone do anything. It's not up to me, or to you.
It's just a reality that there are voters on the right who will sit out an election if they disagree with a candidate on issues critical to them, or feel an elected official betrayed them on critical campaign promises. Nothing anyone can do about that and snarky remarks on a discussion forum change nothing.
And if the president abandons his America first positions on hiring and immigration/work visa issues, it will cost him some votes. Those decisions are made one voter at a time.