If Trump is elected president, will constitutional law and American political institutions protect us from a would-be dictator? Europeans worry about the emergence of Caesarism in the United States, just as the founders did when they invented the presidency. Authoritarianism is making gains around the world; why not here? Of course, Trump may not want to be a dictator. He has repeatedly stated his desire to make “deals,” implying a willingness to cooperate with Congress. But there is no reason to believe anything he says; many of his actions and statements are those of someone with a dictatorial mentality if nothing else, and his popular support derives from his authoritarian image: he appeals to people who yearn for a strongman to protect them. So the question is worth asking. What is the answer?