One of the central questions of the 2020 Presidential campaign was posed last week before the Court of Appeals for the Fifth Circuit, in New Orleans, to a lawyer for the Trump Administration, who didn’t even pretend to have an answer. A three-judge panel was hearing the appeal of a ruling by Reed O’Connor, a Texas district-court judge, that the Affordable Care Act, or Obamacare, was unconstitutional in its entirety—an opinion that the Administration has endorsed.