By Avik Roy On March 4, the Supreme Court will hear oral arguments in King v. Burwell, the case that many pundits claim will “blow up Obamacare.” That’s an exaggeration; whatever the High Court decides, Obamacare will remain entrenched in federal law. But if the Supremes do end up ruling against the Obama administration—a distinct possibility—they will be giving Congress a uniquely important opportunity to reshape the Affordable Care Act in far-reaching ways. Here’s how that could work.