‘ObamaCare’ goes to court. The Supreme Court on Monday will begin an epic, three-day session to hear opposing arguments over President Obama’s overhaul of the health-care system. The court will be examining four separate angles within the case, each of which is fairly complex. The litigants will address the heart of the matter: Does Congress have the constitutional authority to penalize Americans who do not buy health insurance?

 Here, a guide to the blockbuster case