It has long been an article of faith that Donald Trump rules the GOP with an iron fist. There shall be no deviation from his word. Lest anyone stray from his path, the sinner can expect to be smote with a single Truth Social post and their political career destroyed with fire and brimstone. Trump’s rule by intimidation has allowed him to usurp the constitutional duties of Congress — and led congressional Republicans to a near-total abdication of their legislative prerogatives. Trump has managed to destroy the careers of many Republicans he has deemed disloyal by endorsing primary opponents to...