“The two living Republican past presidents, George H. W. Bush and George W. Bush, have no plans to endorse Trump, according to their spokesmen.” So said the lead story in The Washington Post. Graceless, yes, but not unexpected. The Bushes have many fine qualities. Losing well, however, is not one of them. And they have to know, whether they concede it or not, that Trump’s triumph is a sweeping...