How Trump could ruin his presidency, by Ann Coulter.

What coalesced Trump’s base, what made his support tempered steel, was the fact that voters had been lied to, over and over again — on many things, but most smugly and repeatedly on immigration. …

It’s why Trump’s supporters stuck with him through thick and thin … After he gave that Mexican rapists speech, and never backed down, Trump’s base would have brushed off six more “Access Hollywood” tapes. All because they think Trump will take the shot. …

But if he breaks a major campaign promise, his supporters will turn on him with a blind ferocity, dwarfing their rage toward Jeb! because Trump’s is the more exquisite con. He will have duped them. And he will never, ever, ever get them back.

Most of his promises can be kept with little trouble: He will appoint good judges, cut regulations, replace Obamacare and renegotiate trade deals. In other words, he’ll do all the things any Republican president would do — plus the trade deals.

But the moment Trump attempts to make good on his central promise — to remove troublesome immigrants and give us our country back — every major institution in America will declare war on him.

Trump knows that. In his Phoenix immigration speech, he said: “To all the politicians, donors and special interests, hear these words from me and all of you today. There is only one core issue in the immigration debate, and that issue is the well-being of the American people.” …

It will surprise consumers of American media to learn this, but every promise Trump made on immigration is already the law. Why? Because politicians know that’s what the public wants. So they pass the laws — and then refuse to enforce them.

But if Trump doesn’t appoint the sort of people capable of fulfilling his campaign promises on immigration, he will fail. He’ll be just another lying politician, and his supporters will watch in horror as rapists, terrorists and drug dealers continue living in our country.