The United States Supreme Court is the highest court in the country. It has the final say in legal cases. Once the Supreme Court judges an issue, its ruling becomes the law. To change this, the Court would have to make a new ruling, or Congress would have to pass a new law.
Article III of the Constitution set up the Supreme Court.
Judges on the Court are called “Justices.” Since 1869, there have always been nine justices on the Court. They all vote to decide the result of a case, making them like a jury.
Supreme Court Justices serve lifetime terms. That doesn’t mean that they have to stay on the job until they die, but they can’t be fired if the President or Congress don’t like their rulings.
It’s up to the Justices to decide which cases they want to take – but their decision is always final.
Justices on the Supreme Court can write their own opinion on a case, explaining what they think.