I don't see how Justice Elena Kagan can hear the Obamacare court case. The law seems pretty clear that she is conflicted out:
According to 28 USC 455, a Supreme Court justice must recuse from “any proceeding in which his impartiality might reasonably be questioned.” The law also says a justice must recuse anytime he has “expressed an opinion concerning the merits of the particular case in controversy” while he “served in governmental employment.”
Before the liberals start screaming about Clarence Thomas' wife creating a conflict for him, that is not the same. The law does not apply to actions by the spouse of a Justice. I realize that won't stop them anyway, but being armed with the law and the facts is helpful when combating that predictable argument.