The decision is expected around 10:00am Eastern. In the meantime, here's some background and/or related reading for anyone who's interested...
Kaiser: A Guide to the Supreme Court's Review of the 2010 Health Care Reform Law [pdf]
Amy Howe: Anticipating the Health Care Decision: In Plain English
Greg Sargent: What the Battle over Obamacare Really Comes Down To
Lyle Denniston: A Reader's Guide to Health Care Ruling
CNN: Supreme Court Set to Make Ruling on Polarizing Health Care Law
Reuters: Obama to Learn Supreme Court Health Verdict from News
E.J. Dionne: Justice Scalia Must Resign