‘Low Risk’ of New Cases to Overturn Obamacare After Court Ruling

Unless Congress acts to require people to buy health insurance, the road to a broad-stroke constitutional challenge to Obamacare is more or less closed.

In a move that surprised most court watchers, the Supreme Court on Thursday resolved on procedural grounds the latest attack on the Affordable Care Act. The court held that Republican-controlled states and two individuals who brought the lawsuit couldn’t prove how they were injured by the provision in the law that requires everyone to buy insurance because it’s not enforceable.

The ruling means some 20 million people get to keep their health insurance.

“This is a ...