Donald Trump is quadrupling — maybe even quintupling — down on this hideous feud he has launched against four freshman members of the House of Representatives.

He told the four congresswomen that they could return to where they came from if they didn’t like the country they were elected to serve in Congress. Most Americans believe the Twitter tirade was racially/ethnically/religiously inspired. Three of the four congresswomen were born in the United States, making them every bit as American as Trump; the fourth came here as a pre-teenager from her native Somalia.

He is not letting up. Trump said Tuesday that the congresswomen “hate” the country. They “hate” American values and want to “destroy” the nation as we’ve known it.

Here is what I heard him suggest: Either you agree with me or you must hate the country.

This is utterly, profoundly, astonishingly ignorant. Donald Trump is suggesting that you either support him wholeheartedly or you want to turn the nation into some sort of socialist enclave.

Wow!

Donald Trump is accusing his critics of doing precisely what he did four years ago when he declared his candidacy for president.

Have the Trump legions been afflicted by acute amnesia? Do they not remember what this carnival barker said about President Obama? Do they not recall the intensely personal criticism he leveled not just at Obama, but also at President George W. Bush, President Clinton?

Indeed, this con artist ran a campaign based virtually exclusively on righting what he called the “stupidity” of previous presidents’ policies. Let’s not forget, too, that he did all this against the backdrop of his fomenting the lie that questioned President Obama’s birthright as a U.S. citizen.

So, for the president to say today that you’re either for him or against our nation is to imply that he, too, hated the country four years ago when he sought to be elected president.

I’ll say it once more: Donald Trump is unfit for the office he occupies.