The Prince of Wales, Prince William, and the younger royals all deliberately snubbed President Donald J. Trump on his visit to the UK, the Sunday Times reports. I blame the Meghan effect. Of course we can’t hold the arrival into the Royal household of a pretty actress who used to be in Suits wholly responsible for this outbreak of crass, thick, petulant behaviour: as we know, the Prince of Wales is more than capable of that without much prompting; and in Will’s case, the acorn doesn’t look as if it has fallen too far from the tree. Still, I’m blaming...