II’S TIME FOR THE Trump haters to ditch their “unfit” trope.

From former CIA chief John Brennan on the Left to the Never Trumpers on the Right, Donald J. Trump is “unfit” to be President. Or so they insist. Somehow, they claim, a combination of incompetence, mental illness and excessive fast-food consumption all render Trump incapable of executing his duties.

While this has been an ugly lie since Trump’s inauguration, these stalwart naysayers now should see that Trump is entirely equipped to do his job. Trump’s critics surely will disagree with his policies and decisions. But the last few weeks should make even them admit that, whether they cheer or jeer his actions, he actually is performing as President, and effectively so.

President Trump had a nearly flawless state visit with Queen Elizabeth II in London in June, followed by D-Day commemorations in Portsmouth, England.

The next day found Trump, French President Emmanuel Macron, and other European leaders above Normandy’s beaches, to mark the 75th anniversary of the Allied invasion of Nazi-occupied France. Trump delivered a solemn and touching speech, arguably the best of his tenure. He honored the mind-bendingly valiant GIs who liberated Europe. Some 170 of these nonagenarians were there to accept the effusive gratitude of Trump and his counterparts.

To end the chaos on the southern border, Trump threatened to slap ever-higher taxes on Mexican imports, unless America’s neighbor slowed or stopped the relentless, northward march of illegal aliens. After a three-day negotiation, Mexico agreed to deploy 6,000 troops on its frontier with Guatemala. Another 15,000 Mexican soldiers mobilized onto their border with America. The ever-expanding caravans already seem to have slowed down.

Speaker Nancy Pelosi, D-Calif., caved in and let the House pass a less restrictive, bipartisan Senate bill to provide $4.6 billion for humanitarian relief on the southern border. Under pressure from Trump and his allies, Congress finally addressed complaints of overcrowding and other discomforts in overwhelmed illegal-alien detention centers.

Trump turned his attention to Iran, which blasted a U.S. drone out of the sky on June 20, just days after it bombed a Japanese ship in the Gulf of Oman, apparently the sixth such vessel that Tehran has struck since May 12. Just 10 minutes before a U.S. military retaliation, Trump canceled the action. He reckoned that a projected 150 Iranian deaths would be disproportionate.

The trigger-happy mad bomber of Leftist lore instead exercised restraint. Any further aggression by the ayatollahs would expose them as warmongers. This would make an American armed response almost the polite thing to do. Meanwhile, Trump applied even harsher economic sanctions on Iran’s top thugs, squeezing them harder, without firing a shot.

Trump prospered at the G20 summit in Osaka, Japan. He and Chinese President Xi Jinping resumed trade talks. The Dow, NASDAQ, and S&P 500 since have reached record highs.

Trump capped June by visiting South Korean President Moon Jae-in in Seoul. Trump arranged an impromptu, “Hey, I’m in town,” mini-summit with North Korean strongman Kim Jong-un. Trump became America’s first sitting President to enter North Korea, via the De-Militarized Zone. Trump and Kim met for 55 minutes and then resurrected denuclearization talks.

President Trump knows exactly what he’s doing, and he’s getting it done. He is, indeed, fit for office, as confirmed by these and other victories — not least the confirmation of 123 constitutionalist federal jurists.

Finally, as the Russiagate hoax recedes into memory, Democrats’ fading impeachment chants underscore their status as Earth’s sorest losers ever. As these storm clouds vanish, Americans are seeing how President Trump operates when he does not hear nearly every Democrat and journalist scream, “RUSSIA!” 24/7/365.

Just imagine, if William Barr, and not Jeff Sessions, were attorney general from Day One, and the Russiagate/Mueller travesty never happened. Americans could have had for the last two and half years the President who has governed for the last several weeks.

Deroy Murdock is a Manhattan-based Fox News Contributor, a contributing editor with National Review Online, and a senior fellow with the London Center for Policy Research. Michael Malarkey contributed research to this opinion piece.