PENN, CLINTON, UNIONS. According to The LA Times, there actually is continuing, albeit quiet, pressure from the unions for Hillary Clinton to either fire Mark Penn or force him to quit his union-busting PR firm. There are hints, too, that this will bust into the open at the AFL-CIO's Democratic debate tonight, which will be broadcast live on MSNBC, and moderated by Keith Olbermann. --Ezra Klein
