They don't have to do anything about it. It would be up to the administration to attempt enforcement of a non-existent law - a rather problematic proposition.
The Obama: "Comply with X!"
Peon: "What X? There is no X to comply with."
The Chicago Way only goes so far.
You raise an excellent point.
If Obamacare is tossed “The Secretary Shall” will begin to ring very hollow.
She will order the Catholic Church to pay for birth control, or health insurers to provide some service for “free”, and they will be able to turn around and say “Bite Me, Madam Secretary!”
Which would be one of the fringe benefits of this frankly.
I expect that he is going to do exactly that.
He is Black Jesus after all.