Rumor has it that Chief Justice John Roberts switched his vote at the last minute on the Affordable Care Act decision. And some conservatives are none too happy about it. They're calling him all kinds of unpleasant names.

But did the Chief Justice actually switch his vote? And if so, so what?

We'll talk to former Tennessee Supreme Court Justice Penny White and to Professor George Kuney, two distinguished professors at the University of Tennessee College of Law. They'll tell us all about how appellate courts work, and what (might have) happened just before the decision on "Obamacare" was handed down.