Even if 0bamacare is overturned, 0bama will still implement it. THAT will be the test, not the SCOTUS decision. This is why 0bama must NOT be re-elected. If re-elected, he'll lay low on 0bamacare then pull the trigger after November regardless SCOTUS' decision.
The question in my mind is; if Romney is president (and I think he will be), will he keep it going even if SCOTUS shoots it down?