President Trump's warning to a conservative gathering that before this election is resolved the person who could next emerge as President is Nancy Pelosi, well, it's a startling point. It's not entirely idle, though. The Constitution, and legislation it grants the Congress the power to pass, both envision a situation where the Speaker could automatically become president at 12:01 p.m. o'clock on January 20. Neither Mr. Trump, as we understand him, nor we are saying such an event is lik...
