Past Denials of Vulnerability Raise Health Act What-Ifs .......

Opponents of the health plan were indeed serious, and so was the Supreme Court, which devoted more time to hearing the case than to any other in decades. A White House that had assumed any challenge would fail now fears that a centerpiece of Mr. Obama’s presidency may be partly or completely overturned on a theory that it gave little credence. The miscalculation left the administration on the defensive as its legal strategy evolved over the last two years.