Donald Trump has threatened “Little Rocket Man” with “fire and fury like the world has never seen”—not even seen, presumably, at Hiroshima or Nagasaki. We possess, after all, many more and much better (that is, much worse) explosives than were used by President Truman in 1945, when he incinerated those cities without Congress or the American people knowing we even had them. The fact that President Trump (“old lunatic”) has a legally absolute power to destroy Kim Jong-un (“short and fat”) over dueling insults is so scary that Senator Edward Markey and Representative Ted Lieu are trying to restrict that absolute power, so that only Congress would have the authority to declare nuclear war. This seems not only reasonable but constitutionally necessary. The Constitution in fact denies the president the power to declare war and reserves it solely to Congress. More than that, the framers clearly opposed the massing of power in the executive—lest it become the monarchy they had opposed with a revolution.