It is unlikely, but now at least possible, that Nancy Pelosi will be the next president of the United States. It will not happen by election in 2020, but by succession to the White House this year. Some of you might recall that after the near assassination of Ronald Reagan, chaos ensued in the White House. Secretary of State Alexander Haig told reporters, “Constitutionally, gentlemen, you have the president, the vice president and the secretary of state, in that order.” He added, “As for now, I am in control here, in the White House, pending the return of the vice...