All of which suggests President Trump either has inner reserves of humility and faith in our system of justice (convincingly hidden to date) that he tapped when he nominated Mr. Barr, or somehow a man of genuine honor has somehow flown beneath the presidential radar. Had anyone but himself nominated Mr. Barr to succeed Jeff “Mr. Magoo” Sessions, Mr. Trump would surely have been tweeting his reaction to Tuesday’s proceedings in more typical fashion: “Mueller scandal IS a Witch Hunt. Blowhard Bill Barr is WRONG, WRONG, WRONG,” or something to that effect. In retrospect, the “Barr memo” — Mr. Barr’s much talked-about missive on how the firing of former FBI Director James Comey can’t support an obstruction of justice charge, which Democrats thought might disqualify Mr. Barr as AG, may have been the best thing to have happened to the Mueller probe. Could it be the president thought he was hiring a toady and got a member of the much-dreaded “Washington establishment” instead?