The Supreme Court will issue its ruling on Obamacare any day now. It seems fairly certain that the Individual Mandate will be held unconstitutional, perhaps even by a super majority of the Justices (based on the questions which pummeled the sad sack Solicitor General during oral arguments).
The interesting question is whether, since there was no severability clause, the entire statute will go down in flames as well. It seems that a draft of the bill actually had such a clause (which keeps the rest of the statute in place in the event that part of the law is ruled unconstitutional). The clause was removed before the final vote. Whether this will make a difference to the liberal Justices, or whether they find an implied severability clause in emanations from the penumbra or something - that's what we're waiting to see.