Liberals should learn from this display that there is no point in catering to today’s hard-line conservatives. The individual mandate was a conservative idea that President Obama adopted to preserve the private market in health insurance rather than move toward a government-financed, single-payer system. What he got back from conservatives was not gratitude but charges of socialism — for adopting their own proposal.

The irony is that if the court’s conservatives overthrow the mandate, they will hasten the arrival of a more government-heavy system. Justice Anthony Kennedy even hinted that it might be more “honest” if government simply used “the tax power to raise revenue and to just have a national health service, single-payer.” Remember those words.