It sounded so simple. Too simple, it turns out. President Barack Obama's early efforts to boil down an intricate health care law so Americans could understand it are coming back to haunt him, leaving a trail of caveats and provisos in place of the pithy claims he once used to sell the law. Jonathan Gruber, who played a central role in crafting Obama's health law, said the moral of that story was that most Americans are happy with their health care and are resistant to change. "The view was, 'Look, we've got to get this across the finish line.' To...