The nation’s No. 2 court on Tuesday slapped down the Obama administration in a 2-1 decision that could kill the president’s signature health-care law. A less-prestigious federal appeals court issued a contradictory opinion the same day, but if the Supreme Court upholds the DC Circuit’s ruling, it will force Congress back to the drawing board to design a health law that is genuinely affordable, not just falsely titled “Affordable Care Act.” The ruling in Halbig v. Burwell bars the federal government from handing out taxpayer-funded subsidies to people who buy ObamaCare plans in nearly two-thirds of the states — New...