Supreme Court justices are the judges who serve on the Supreme Court of the United States, the highest court in the country. There are nine justices, including one Chief Justice and eight Associate Justices. They are appointed by the President and confirmed by the Senate. Their main role is to interpret the law and ensure that it aligns with the U.S. Constitution. Justices serve lifetime appointments, meaning they can remain in their positions until they choose to retire or pass away. They hear cases that often involve significant legal questions, such as civil rights, federal laws, and state laws, making their decisions influential in shaping American law and society.