On March 4, the Supreme Court heard oral arguments in King v. Burwell. The case involves the availability of tax credits in federally-run, as opposed to state-run, health care exchanges under the Affordable Care Act (ACA). If the Court eliminates the credits, premiums will rise and millions of Americans will be left uninsured. One study estimates that each year, 9,800 people will die as a result of being uninsured. This shock to the insurance market could trigger a “death-spiral” of skyrocketing premiums that would mean the complete collapse of the ACA system and leave even more Americans uninsured.