The US Supreme Court: A prominent Washington, D.C.-based governmental body, it is the highest judicial court in the United States. Its primary mission is to ensure equal justice under law as the final court of appeal and guardian of the Constitution. The Court’s main activities include interpreting federal law, exercising judicial review, and resolving inter-state disputes. Noted for establishing judicial review in *Marbury v. Madison* and its significant impact on civil rights, such as overturning *Roe v. Wade*, it sets legal precedent for the nation.