A critical part of the Affordable Care Act is the setup of marketplaces or exchanges to let people without insurance buy individual health plans. Some states setup their own exchanges, and some states let the federal government step in and run them. To help the lower middle class and poor the Act provides health subsidies to buy insurance in the exchanges, and 85% of customers in the exchanges qualify for this benefit. The U.S. Supreme Court voted 6-3 in 2015, compared to a tight vote in 2012 on the Affordable Care Act, to maintain the health subsidies. Justice Roberts wrote the majority opinion, saying "Congress passed the Affordable Care Act to improve health insurance markets, not destroy them." Justice Scalia dissented calling it "interpretive jiggery-pokery." Justices Clarence Thomas and Samuel Alito Jr. dissented. Voting in favor were Justices Anthony Kennedy, Ruth Bader Ginsburg, Stephen Breyer, Sonia Sotomayor, Elena Kagan, Justice Kennedy dissented in the 2000 case. The challengers petition to the courts was based on a reading of phrases in the Affordable Act which had not occurred to the writers of the law. The reading suggests only people enrolled in state setup exchanges are eligible for subsidies. If the Supreme Court ruled in favor of the plaintiffs the 6.4 million Americans who are enrolled in the federal exchanges would lose the subsidies provided under the law and lose health insurance. And the economic foundations of the Affordable Act would be undermined with insurance companies required to provide insurance to all regardless of pre-existing conditions and subsidies removed, leaving the companies with sicker pool of customers resulting in destabilizing the exchanges and higher premiums. The court ruled in favor of an interpretation that is compatible with the whole law and the intentions of the statute to help the middle class and the poor buy health insurance. The chaos in the insurance markets that would result in going with the plaintiffs because of a careless writing of a phrase, was uppermost in the majority's mind. Chief Justice Roberts emphasized this, saying- "The statutory scheme compels us to reject petitioners' interpretation, because it would destabilize the individual insurance market in any state with a federal exchange and likely create the very 'death spirals' that Congress designed the act to avoid." This case originated with 4 plaintiffs from Virginia who challenged the IRS regulation that said subsidies were allowed regardless of whether the exchanges were run by the state or the federal government, arguing that this was at odds with the particular phrase in the law that was ambiguous about federal exchanges eligibility for health subsidies. Judge Roger Gregory of the Fourth Circuit Court of Appeals in Richmond, Virgina, ruled that the phrase was indeed ambiguous, but the IRS was owed deference in its opinion. Chief Justice Roberts made it clear that this was not a case for the IRS, saying "it is instead our task to determine the correct reading." ...