The legal challenges to the Patient Protection and Affordable Care Act began in 2010 when the state of Florida sued the United States Department of Health and Human Services, challenging whether the law was constitutional. When a district court judge ruled that Congress exceeded its authority in requiring individuals to purchase health insurance, (called the individual mandate) , the Department of Health and Human Services appealed to the 11th Circuit Court of Appeals. The 11th Circuit agreed with the district court, ruling that the individual mandate was unconstitutional. However, unlike the district court, the 11th Circuit ruled that the individual mandate could be stricken from the health care bills, allowing the rest of the ACA to stand. The case was eventually appealed to the U.S. Supreme Court. In a 5-4 decision, the Supreme Court upheld the individual mandate of the Affordable Care Act as a legitimate use of Congress's power to tax citizens. Recently in King v. Burwell, the Supreme Court upheld the Affordable Care Act allowing millions of Americans to keep their tax subsidies in order to help pay for health insurance. This is the second case decided in favor of the Affordable Care Act. The opponents of the Act contended that the language in the statute relating to subsidies was ambiguous. However the Supreme Court rejected this interpretation and thought that the clause should be interpreted with the rest of the law as subsidies are available for everyone who purchased health insurance through either a state or federal government exchange. Although it is unknown whether this will be the last challenge to the Affordable Care Act, it is important to note that the Court considered the Act's design and purpose in issuing the decision.