“We talk about America’s system of government,” New York Times columnist Ezra Klein said after Trump’s inauguration, “as if it is a solid thing, bound by the constitution and institutions the way a belt cinches around the waist. But it’s really just a pile of norms in a trenchcoat. Knock the norms down and everything changes.” Trump’s very purpose is to knock them down, but in some ways, he is only accelerating a process that had already started.