Why do conservatives continue to harp on Obamacare's enrollment figures? Because the administration has placed such a heavy emphasis on them as a key metric of quantifying the law's "success," and some in the media have dutifully taken that cue, laboring to construct a "winning streak" narrative for Obamacare. In a post about the law's stubborn unpopularity among the American people, a Washington Post analyst puzzled over how public polling has failed to reflect the supposedly positive developments of last month. Perhaps the reason is that people are suspicious of the White House's numbers -- which, even if they were...