Since the inception of health care marketplaces (formerly exchanges), millions of individuals have received federal tax credits (subsidies) to support purchase of insurance that would otherwise not have been affordable. In setting up the subsidy, Congress said it would apply to those marketplaces “established by the State.” The interpretation of “state” is now being considered by the US Supreme Court in the case King v. Burwell. Specifically, the Justices will determine if providing tax credits to individuals in states with a federal marketplace is consistent with the intent of the law. Does “state” only apply to state marketplaces? Arizona did not establish a “state” marketplace and uses the Federal system. If the Court overturns the current language, as many as 125,500 AZ residents could lose health care coverage