David Frum writes: Day by day, revelation after revelation, the legitimacy of the Trump presidency is seeping away. The question of what to do about this loss is becoming ever more urgent and frightening.

The already thick cloud of discredit over the Trump presidency thickened deeper Friday, June 23. The Washington Post reported that the CIA told President Obama last year that Vladimir Putin had personally and specifically instructed his intelligence agencies to intervene in the U.S. presidential election to hurt Hillary Clinton and help Donald Trump.

Whether the Trump campaign knowingly coordinated its activities with the Russians remains uncertain. The Trump campaign may have been a wholly passive and unwitting beneficiary. Yes, it’s curious that the Russians allegedly directed their resources to the Rust Belt states also targeted by the Trump campaign. But it’s conceivable they were all just reading the same polls on FiveThirtyEight and RealClearPolitics.

Trump himself passionately denounces the whole thing as a monstrous hoax, a “made-up story.” He has not yet lost all his true believers. But those believers do not include very many of the leading Republicans in Congress. Senate Majority Leader Mitch McConnell agrees it happened. So does House Speaker Paul Ryan. The House number two, Kevin McCarthy, has even joked that Russia pays Trump.

It’s not seriously disputed by anyone in a position of authority in the U.S. government—apart from the president himself—that Donald Trump holds his high office in considerable part because a foreign spy agency helped place him there. So now what? [Continue reading…]