With House Democrats in full witch-hunt mode, President Trump is unquestionably right to dismiss them — that is, to cite executive privilege and other legitimate reasons to frustrate Rep. Jerry Nadler & Co.’s fishing expeditions.

Nadler’s Judiciary Committee is looking to win points with the Democratic base by conducting endless re-investigations of everything covered by special counsel Bob Mueller’s extensive probe. To that end, he’s demanding testimony from former White House counsel Don McGahn and presidential aides.

Nadler clearly has no right to demand they answer his questions, under oath or otherwise, because a president’s right to confidential discussions with his staff is clearly covered by executive privilege. Any such subpoenas the chairman issues are just for show, designed to bring more outraged headlines from the anti-Trump press — all to feed the rage addiction of lefties left forlorn by the Mueller report.

Mueller clearly showed that Team Trump never “colluded,” and that the most infamous suggestion otherwise, the Steele dossier, was a pack of . . . fiction. So Dems are left trying to flesh out the “obstruction” charge, even though Mueller found that Trump barked a lot about the Russia investigation but ultimately didn’t bite.

Indeed, the president ordered McGahn and others to give Mueller their full cooperation. Trump declined to invoke executive privilege for that investigation. But he’d be a fool to do the same for purely partisan efforts to feed the left’s conspiracy theories.