The liberal establishment is discovering the danger of assuming that your opponents’ arguments are ridiculous and unworthy of consideration. Last week, they learned that the people who actually pass judgment upon them might disagree.

They were shocked to see the Supreme Court give a respectful, thorough and (hopefully) favorable hearing to the conservative arguments against Obamacare’s constitutionality, which former Speaker Pelosi had dismissed as too silly to even address. Had she spent less time dismissing her opponents’ ideas and more time understanding and responding to those arguments, she might still be speaker instead of the most brutally repudiated legislator in generations.