Donald Trump has sent a ‘cease and desist’ letter to the perennially corrupt and tendentious “Club for Growth” demanding they stop running ads against him. They’re defamatory, mean, false, bad, etc. There’s no direct connection to Citizens United. But I would say it’s all of a piece. “Speech” in the form of unlimited spending by billionaires becomes entirely unfettered. But we also import the moguls’ habit of unbridled litigiousness to clamp down on actual speech. Welcome to the future.