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In the United States, the court system is where disputes, or disagreements, are settled.
The U.S. has two systems – the state system and the federal system. A dispute about a state’s law is heard by a state court judge (or jury) or by a justice of the state supreme court. A dispute about the U.S. Constitution or certain other matters is heard by a federal court judge or jury. A few disputes are heard by the highest federal court – the Supreme Court. While there are more than 250 state supreme court justices, there are only nine Supreme Court justices at the federal level. Ruth Bader Ginsburg became one of them.