Daniel Henniger: Trump is sane. And Michael Wolff's 'Fire and Fury' just did him a big favor

By putting it out there that the U.S. president is an “idiot,” a “dope,” “dumb as sh—” and basically insane, Michael Wolff may have ensured the success and continuation of Donald J. Trump’s improbable presidency. That’s right, Michael Wolff, who admitted on “Meet the Press” that “this is 25th Amendment kind of stuff,” did President Trump a favor.

It’s impossible to know which half of Mr. Wolff’s book is more-or-less true and which half is second-level hearsay (similar to many of the Russian collusion stories). So it follows that among those uncertain about what’s fake is Donald Trump. After all, someone did allow Mr. Wolff, a well-known stab-in-the-back specialist, to hang around the White House for six months. A lot of White House courtiers, including the exiled Steve Bannon, seem to have spent most of their working hours the first six months speed-dialing dirt to White House reporters. We all watched the muck leak into the Oval Office.

So if you are Donald Trump, and like any normal person don’t want the world to think you’re cuckoo, what do you do? You prove they are wrong. Which is what Mr. Trump did twice this week with conscious intent in public forums. Both events not only showed the president acting, in his word, “stable,” both also offered a successful model for a post-Bannon, post-Wolff presidency.

People who have a job that requires them to make a living by doing something other than watch Donald Trump in real time most likely didn’t see either of these events. The first was Mr. Trump’s speech Monday to the American Farm Bureau in Nashville, Tenn. The other, which is worth a look if you didn’t see it, was a nearly hour-long session on immigration legislation Mr. Trump held at the White House with about 24 members of Congress, TV cameras rolling and the press taking notes.

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Daniel Henninger is the Wonder Land columnist for The Wall Street Journal where he serves as Deputy Editorial Page Editor. Follow him on Twitter @DanHenninger.