How did supreme court hold judiciary power?

The Supreme Court holds judicial power through its authority to interpret the Constitution and review the constitutionality of laws and government actions. This power, established in the landmark case Marbury v. Madison (1803), allows the Court to invalidate legislation and executive actions that it finds unconstitutional. As the highest court in the United States, it serves as a check on the other branches of government, ensuring that laws align with constitutional principles. Through its decisions, the Supreme Court shapes legal precedents and influences the interpretation of rights and liberties.