In the next few days, the Supreme Court will issue a decision in King v. Burwell, the most contentious case of the year. (I’m not counting same-sex marriage because everyone thinks it’s a foregone conclusion.) For those still unfamiliar with what is probably the last existential legal challenge to Obamacare, King asks whether the text of the Affordable Care Act, which provides for subsidies for people who buy health insurance from exchanges “established by the state,” also allows the IRS to give these tax credits to those buying from the federal healthcare.gov.