Saturday night’s White House Correspondents Dinner was exactly what you’d expect it to be. Namely, it was a partisan cluster filled with journalists cosplaying as celebrities that seal-clapped for Joe Biden even as he mocked them for their slavish devotion. Well, it was that and also yet another example of the president’s ever-diminishing mental capacity. The pathetic nature of that scene wasn’t lost on everyone, though. Scott Jennings, who offered his critique on CNN of all places, pointed out how pathetic it was for the press to clap along to a president making fun of the fact that they are...