Early on a mustache-twirling villain emerged as the face of the Trump White House. With the mannerisms of a pompous English B-movie baddy, Sebastian Gorka is to Donald Trump what the Sheriff of Nottingham was to King John. The malevolent sidekick. Dr. Gorka styles himself as the crusading academic. A Kissinger for our troubled times. The brilliant scholar of terrorism who has taught at elite colleges and published groundbreaking research. He often reminds the imbeciles of the press that as a man of great learning only he truly comprehends the threat of Muslims. But experts have listened to Gorka’s advocacy...