Read the entire ruling, including opinions by Chief Justice John Roberts, Justice Ruth Bader Ginsburg, and Justice Anthony Kennedy. Here is the Court’s ruling. You can read one plain-English paragraph explaining it here. You can read an embeded version on the atlantic.com here: http://www.theatlantic.com/politics/archive/2012/06/the-supreme-courts-obamacare-decision-full-text/259102/