Looks like 2013 will include many of the characters who made 2012 such a nerve-racking year for the health care reform law—everyone from state-level leaders hoping to prevent its full implementation to Supreme Court justices deciding the law's fate. The nation's highest court may have upheld a central pillar of the law last summer—the so-called "individual mandate" that most Americans either purchase health insurance or pay a fine—but that doesn't mean the rest of the ACA is free from debate. Questions are slowly percolating through the lower courts—with some possibly headed toward the Supreme Court—about contraception coverage, the Senate's ability to "originate" a tax and the legality of the online insurance marketplaces known as exchanges.