It was his signature campaign promise and got him elected. Not moving the embassy in Israel or giving Wall Street and Silicon Valley a giant tax cut. He hasn't done crap to fulfill it and has instead appointed numerous people who opposed his policy.
I get it that congress opposed him on immigration. But he had a republican House for two years and instead of pushing the wall and shutting down loopholes, he let Paul Ryan set his agenda. Even when he "discovered" that he was being played, he did nothing. He could have put the military there in large numbers and told them to build a wall to protect themselves from cartel gunmen.
He's compounding it by selling out his working class/middle class base with massive increases in legal immigration. He even brags about it.
People got beat up, fired, tossed out of families and marriages, all for the crime fo supporting Trump. He's moved the embassy, pushed tax cuts for billionaires and letting felons out of prison early. Thanks a lot man.