Some are already anticipating the Supreme Court's ruling on President Barack Obama's health care law as the "decision of the century." But the justices are unlikely to have the last word on America's tangled efforts to address health care woes.

The arguments are done and the case has been submitted, as Chief Justice John Roberts says at the end of every Supreme Court argument. Now the justices will wrestle with what to do with President Barack Obama's health care overhaul. They have a range of options, from upholding the law...