“What’s done cannot be undone,” said Lady Macbeth, and she was right.

And here we are.

It might be that the beginning of the end for Joe Biden occurred just over two weeks ago. That was when he called that disastrous last-minute press conference at an hour well past snuggerbunnies for the purpose of addressing Special Counsel Robert Hur’s damning report about his mishandling of classified documents ever more noticeable cognitive decline.

Or it might not be, if Herr Doktor Jill Biden, Ed.D., has her way. As we noted back in 2021, the first lady could’ve prevented this freight train of elder abuse if only she’d convinced her husband and his handlers that he wasn’t fit for the job. Even casual observers could see the difference between the moderately capable if gaffe-prone guy who served two terms as Barack America’s veep and the increasingly incapable guy whom the desperate Democrats propped up as their best chance to beat Donald Trump in 2020.

Yes, Jill Biden could’ve prevented all this, but she desperately wanted to be first lady. And as lefty historian Douglas Brinkley noted last weekend on CBS’s “Face the Nation,” she still does.

“She is the vital part,” said Brinkley. “Dr. Jill Biden is it. You know, if you go back to 1952, Harry Truman could have run, and he didn’t. Why? Well, the Korean War and, you know, other reasons. But Bess wanted to go back to Independence, [Missouri,] you know, she didn’t like it in Washington.

"If you cut to ‘68, Lyndon Johnson was — quit in March of '68, and people will say because of Walter Cronkite. No. The big thing was his health was bad. He had a bad heart, he was smoking, high blood pressure, tension, and Lady Bird Johnson didn’t want to stay in. And she wanted — 'Let’s go back to Texas,’ and convinced Johnson to step down.”

So there you have it. That’s two presidential wives who did the right thing by their husbands. But, as Brinkley continues: “That’s not the case with Jill Biden. She likes power. She wants to stay. She wants some sense of revenge.”

“Revenge” wasn’t Jill Biden’s word, of course, but we get the sense that it isn’t far off. Her husband has held the fewest solo press conferences — three — of any modern president, and at the second one, way back in January 2022, she went ballistic on his aides for not having brought it to a close long before he embarrassed himself. Apparently, even the president sat there like a beleaguered staffer as she lashed out.

As the New York Post reports: “At that presser, Biden suggested a ‘minor incursion’ by Russia into Ukraine would prompt a minimal US response, leaving officials in Kyiv aghast and suggesting the president had given Vladimir Putin a ‘green light’ to invade — which he did weeks later. ‘Why didn’t anyone stop that?’ Jill Biden fumed to aides, demanding an explanation for her husband being left to wilt before the world, according to excerpts from a forthcoming book by New York Times correspondent Katie Rogers.”

But the gaffes, they keep a-comin’. During that ill-fated presser two weeks ago, Biden responded to a question about aid to Palestinian civilians in Gaza by saying, “The president of Mexico, Sisi, did not want to open up the gate to allow humanitarian material to get in.”

What, we wonder, does Mexico have to do with Gaza? As late-night king Greg Gutfeld quipped soon thereafter, “Denial isn’t just a river in Tijuana.”

No wonder Dr. Jill is furious. That a first lady has to monitor her husband’s exposure to the media is telling enough. That a special counsel has described him as “a sympathetic [sic], well-meaning [sic], elderly man with a poor memory” is even more troubling. As The Washington Free Beacon’s Andrew Stiles brilliantly puts it, “He should be relaxing on a beach in Delaware, not constantly cheating death on the Air Force One staircase.”

And yet, Joe Biden shuffles across the White House lawn with his wife firmly gripping his hand to keep him from wandering over to the assembled press, where he might once again embarrass himself. And her. We wonder, Madame First Lady: Is it worth it? Is putting your husband through this worth the trappings of the White House?

As Lady Macbeth grimly observed, “All the perfumes of Arabia will not sweeten this little hand.”