Kimberly Cheatle, director of the Secret Service, suggested on ABC News that one reason the shooter was able to graze Donald Trump’s ear with a bullet was the “sloped roof” upon which he perched was a “safety factor” for law enforcement — so to keep them safe, she stuck all the agents inside the building. That’s a blunder of epic proportions. She should be immediately fired, particularly since she also, in the same interview, admitted that “the buck stops with me.” But she won’t. Cheatle...