On June 25th, 2015, in King v. Burwell, the Supreme Court decided a matter impacting the health care coverage of millions of Americans. The Affordable Care Act (ACA) was enacted by Congress in 2010 to increase the number of Americans covered by health insurance. Under the ACA, people can purchase health insurance through an “exchange” in each state, basically, a marketplace that allows people to compare and purchase insurance plans. Every state can create its own exchange but if the state chooses not to, the federal government then establishes such an exchange.