The Kavanaugh controversy has united Republicans as never before behind a president once viewed with deep suspicion. Whom the gods would destroy, they first make mad, we are told by the ancients. Donald Trump is no one’s idea of a god but his ability to reduce his opponents to wailing, gibbering husks, like demented characters in a Greek tragedy, seems increasingly Olympian in its reach. Last weekend, as Brett Kavanaugh, the president’s Supreme Court nominee, was finally being confirmed in the Senate, the Furies were unleashed and the Republicans’ foes took flight from the asylum... The past few weeks have...