By a 6-3 vote, the justices said consumers qualify for a subsidy that lowers the cost of premiums whether they buy their coverage through federal or state exchanges. Chief Justice John Roberts wrote the opinion.
"Congress passed the Affordable Care Act to improve health insurance markets, not to destroy them. If at all possible, we must interpret the Act in a way that is consistent with the former, and avoids the latter," the court wrote in its majority opinion .
Justice Antonin Scalia, writing for the dissenters, said people should start calling the law "SCOTUScare."
"This Court, however, concludes that this limitation would prevent the rest of the Act from working as well as hoped. So it rewrites the law to make tax credits available everywhere. We should start calling this law SCOTUScare."