The judicial branch reviews laws and explains laws. It resolves disagreements. It also decides if a law is supported by the Constitution, or is constitutional. The Supreme Court and all other federal courts are part of the judicial branch. Some federal courts decide if someone breaks the law. Other federal courts resolve disagreements. Every law must follow the Constitution.
Section "Learn and Explore" uses official instructions and media files of US Citizenship and Immigration Services, US National Museum of American History, The Smithsonian Institution and other governmental and public organization.