The president’s Democratic adversaries rolled out the biggest constitutional weapon they had and failed to defeat him, or even to force a full trial with witnesses testifying to the allegations against him. Now Mr. Trump, who has said that the Constitution “allows me to do whatever I want” and pushed so many boundaries that curtailed past presidents, has little reason to fear the legislative branch nor any inclination to reach out in conciliation.

“I don’t think in any way Trump is willing to move on,” said Mickey Edwards, a former Republican congressman who teaches at Princeton University. “I think he will just have been given a green light and he will claim not just acquittal but vindication and he can do those things and they can’t impeach him again. I think this is going to empower him to be much bolder. I would expect to see him even more let loose.”…

“He is going to ratchet it up to another level now,” said Anthony Scaramucci, the onetime White House communications director who has broken with Mr. Trump. “He’s going to be Trump to the third power now. He’s not going to be exponential Trump because that’s not enough Trump. It’s going to be Trump to the third power.”