The Supreme Court functions as the highest judicial authority within the American political system, interpreting laws and upholding the Constitution. It reviews cases involving significant legal questions and determines their constitutionality, establishing precedents that influence lower courts and shape national policy. The Court's decisions can have far-reaching implications, affecting civil rights, individual liberties, and government powers. With the ability to check the legislative and executive branches, the Supreme Court serves a crucial role in maintaining the rule of law and ensuring that justice is administered fairly across the nation.