DOMA's Days Are Numbered

You are correct in that when state laws conflict with the laws that are stated in the constitution and bill of rights, the federal government will win. That said, you also made my point with the health care part as well. The federal government does not have the right to define marriage and by that same token it also does not have the right to force the people to have to get health coverage. That is one reason Obama care is unconstitutional.

This is of questionable legitimacy but

Non exempt persons not securing minimum essential health insurance coverage are also fined under the shared responsibility rules. This requirement to maintain insurance or pay a fine is often referred to as the individual mandate, though being insured is not actually mandated by law. Not being insured will not be a crime and no criminal penalty can attach to non payment of the fine. The fine serves to encourage most people into an insurance pool and to deter healthy individuals from buying insurance only when they become ill.

I may be interpreting this wrong, but i'm pretty sure this is saying no one is forced to get health care.