"It's hard to understate the potential impact of an adverse ruling for the administration. In 2014, almost 9 in 10 people who bought coverage through the federal-run exchange, or close to 5 million people, received financial assistance. If that suddenly goes away in June, when a ruling is expected, that instantly makes their coverage less affordable.... It could be that the administration doesn't want to give the Supreme Court any indication that it could provide an easy fix to the law in the event of an adverse ruling. But it's hard to believe that people in the department aren't planning for this scenario."