The case of “King v. Burwell” challenged the interpretation of a portion of  the Affordable Care Act (ACA).  The ACA provided health insurance subsidies for quailed persons.  One requirement was that the insurance be purchased through state-based exchanges (marketplaces).  Only 16 states and the District of Columbia operated their own state-based exchanges.  Most consumers purchased insurance through federal exchanges through the federal government websites.  June 25, 2015 the U.S. Supreme held that insurance subsidies were available to those that qualified for subsidies purchased insurance through the federal exchange.