United States

Each state elects two senators at large. Senators must be at least 30 years old, residents of the state from which they are elected, and previously citizens of the United States for at least nine years. They serve six-year terms, which are arranged so that one-third of the Senate is elected every two years. Senators also are not subject to term limits. The vice president serves as president of the Senate, casting a vote only in the case of a tie, and in his absence the Senate is chaired by a president pro tempore, who is elected by the Senate and is third in the line of succession to the presidency. Among the Senate’s most prominent standing committees are those on Foreign Relations, Finance, Appropriations, and Governmental Affairs. Debate is almost unlimited and may be used to delay a vote on a bill indefinitely. Such a delay, known as a filibuster, can be ended by three-fifths of the Senate through a procedure called cloture. Treaties negotiated by the president with other governments must be ratified by a two-thirds vote of the Senate. The Senate also has the power to confirm or reject presidentially appointed federal judges, ambassadors, and cabinet officials.

Chamber of the U.S. Senate, Washington, D.C.U.S. Senate Photo Studio

The judicial branch

U.S. Supreme Court Building, Washington, D.C., designed by Cass Gilbert and completed in 1935. © Dave Newman/Fotolia

U.S. Supreme CourtJustices of the U.S. Supreme Court (bottom row, from left) Associate Justice Tom C. Clark, Associate Justice Hugo Black, Chief Justice Earl Warren, Associate Justice William O. Douglas, Associate Justice John Marshall Harlan, (top row, from left) Associate Justice Byron R. White, Associate Justice William Brennan, Associate Justice Potter Stewart, and Associate Justice Arthur J. Goldberg, 1962.Warren K. Leffler—U.S. News and World Report/Library of Congress, Washington, D.C. (reproduction no. LC-DIG-ppmsca-41069)The judicial branch is headed by the Supreme Court of the United States, which interprets the Constitution and federal legislation. The Supreme Court consists of nine justices (including a chief justice) appointed to life terms by the president with the consent of the Senate. It has appellate jurisdiction over the lower federal courts and over state courts if a federal question is involved. It also has original jurisdiction (i.e., it serves as a trial court) in cases involving foreign ambassadors, ministers, and consuls and in cases to which a U.S. state is a party.

Most cases reach the Supreme Court through its appellate jurisdiction. The Judiciary Act of 1925 provided the justices with the sole discretion to determine their caseload. In order to issue a writ of certiorari, which grants a court hearing to a case, at least four justices must agree (the “Rule of Four”). Three types of cases commonly reach the Supreme Court: cases involving litigants of different states, cases involving the interpretation of federal law, and cases involving the interpretation of the Constitution. The court can take official action with as few as six judges joining in deliberation, and a majority vote of the entire court is decisive; a tie vote sustains a lower-court decision. The official decision of the court is often supplemented by concurring opinions from justices who support the majority decision and dissenting opinions from justices who oppose it.

Because the Constitution is vague and ambiguous in many places, it is often possible for critics to fault the Supreme Court for misinterpreting it. In the 1930s, for example, the Republican-dominated court was criticized for overturning much of the New Deal legislation of Democratic President Franklin D. Roosevelt. In the area of civil rights, the court has received criticism from various groups at different times. Its 1954 ruling in Brown v. Board of Education of Topeka, which declared school segregation unconstitutional, was harshly attacked by Southern political leaders, who were later joined by Northern conservatives. A number of decisions involving the pretrial rights of prisoners, including the granting of Miranda rights and the adoption of the exclusionary rule, also came under attack on the ground that the court had made it difficult to convict criminals. On divisive issues such as abortion, affirmative action, school prayer, and flag burning, the court’s decisions have aroused considerable opposition and controversy, with opponents sometimes seeking constitutional amendments to overturn the court’s decisions.