I expect the Supremes to overturn ObamaCare. This is not a close call constitutionally, and if the Feds can require us to buy medical insurance with all the quirky items that Congress mandated, then there are no limits on federal power. If I'm wrong, then the United States will die in my lifetime.
Raise your window, that sound you hear is Bag Pipes, playing Amazing Grace.
They will not undo this. They may make some twisted argument to sort of undo the mandate, but the States clearly will have to pick that up.