It has been a rough two months for the Affordable Care Act and its defenders. Having spent years fighting ridiculous allegations about socialized medicine and "death panels," supporters of near-universal coverage now face something different. The performance failures in the rollout of healthcare.gov have triggered cries of "I told you so!" from some liberals. This wouldn’t have happened, they say, if only Obama had supported some form of single-payer plan, such as Medicare for all.