In living memory, no Republican president has evoked the blind hatred from the left that Donald Trump has. Not even Richard Nixon, for all his flaws, provoked this seething anger, contempt, and willingness to casually toss aside historical and constitutional norms to damage him. Some on the left made noises about impeaching George W. Bush, but few of them were in Congress, and there was no official proceeding, other than an attempt by the far-left pols Dennis Kucinich and Robert Wexler, which went nowhere.But Trump? Twice. The second impeachment farce was after he left office. He was acquitted in the...