United States Federal Court System

Constitutional Foundation: Article III

The federal court system of the United States derives its authority from Article III of the Constitution, which establishes a single Supreme Court and empowers Congress to ordain and establish inferior courts. Article III § 1 provides that federal judges “shall hold their Offices during good Behaviour,” a phrase universally understood to confer life tenure subject to removal only through impeachment. The same section guarantees that judicial compensation “shall not be diminished during their Continuance in Office.” Together, life tenure and salary protection constitute the structural guarantees of judicial independence that Alexander Hamilton defended in Federalist No. 78 as “the citadel of the public justice and the public security.”

Article III § 2 defines the judicial power of the United States to extend to all Cases arising under the Constitution, federal laws, and treaties (federal question jurisdiction); Cases affecting ambassadors and other public ministers; Cases of admiralty and maritime jurisdiction; Controversies to which the United States is a party; Controversies between two or more states, between a state and citizens of another state, between citizens of different states (diversity jurisdiction), and between a state or its citizens and foreign states or citizens.

United States District Courts

The district courts are the trial-level courts of the federal system. There are 94 judicial districts, including at least one district in each state, the District of Columbia, and the territorial districts of Puerto Rico, the Virgin Islands, Guam, the Northern Mariana Islands, and the Canal Zone. Each district contains a federal bankruptcy court as a unit of the district court.

District courts exercise original jurisdiction over virtually all civil and criminal matters arising under federal law. The two principal statutory grants are 28 USC § 1331 (federal question jurisdiction: “The district courts shall have original jurisdiction of all civil actions arising under the Constitution, laws, or treaties of the United States”) and 28 USC § 1332 (diversity jurisdiction: actions between citizens of different states or between citizens of a state and foreign citizens where the amount in controversy exceeds $75,000). District courts also share concurrent jurisdiction with state courts over many federal claims; the removal statute, 28 USC § 1441, permits defendants to remove qualifying cases from state court to federal district court.

There are 677 authorized district judgeships as of 2025. Each district has between 2 and 28 judges depending on caseload. Within each district, magistrate judges — appointed by the district judges for renewable 8-year terms — handle pretrial matters, discovery disputes, and, with party consent, full civil trials and misdemeanor criminal cases. Bankruptcy judges, appointed by the court of appeals for 14-year terms, adjudicate bankruptcy proceedings under Title 11 of the United States Code.

United States Courts of Appeals

The 94 districts are organized into 12 regional circuits, each with a court of appeals. The 13th court, the United States Court of Appeals for the Federal Circuit, has nationwide jurisdiction over specialized subject matter including patent appeals, international trade, government contracts, and claims against the federal government. The twelve regional circuits are: First Circuit (Boston, covering Maine, Massachusetts, New Hampshire, Puerto Rico, Rhode Island), Second Circuit (New York, covering Connecticut, New York, Vermont), Third Circuit (Philadelphia, covering Delaware, New Jersey, Pennsylvania, Virgin Islands), Fourth Circuit (Richmond, covering Maryland, North Carolina, South Carolina, Virginia, West Virginia), Fifth Circuit (New Orleans, covering Louisiana, Mississippi, Texas), Sixth Circuit (Cincinnati, covering Kentucky, Michigan, Ohio, Tennessee), Seventh Circuit (Chicago, covering Illinois, Indiana, Wisconsin), Eighth Circuit (St. Louis, covering Arkansas, Iowa, Minnesota, Missouri, Nebraska, North Dakota, South Dakota), Ninth Circuit (San Francisco, covering Alaska, Arizona, California, Guam, Hawaii, Idaho, Montana, Nevada, Northern Mariana Islands, Oregon, Washington), Tenth Circuit (Denver, covering Colorado, Kansas, New Mexico, Oklahoma, Utah, Wyoming), Eleventh Circuit (Atlanta, covering Alabama, Florida, Georgia), and the District of Columbia Circuit (Washington, DC).

Each court of appeals hears appeals from the district courts within its circuit and reviews final decisions of administrative agencies. Appeals are typically heard by panels of three judges. Decisions of a panel may be revisited by the full court through en banc review, which is granted in fewer than 1% of cases. En banc review is discretionary and is ordered only when a case involves a question of exceptional importance or when panel decisions create an intra-circuit conflict.

The circuits vary considerably in size: the Ninth Circuit has 29 active judgeships, while the First Circuit has only 6. The total number of authorized court of appeals judgeships nationwide is 179. Circuit judges, like district judges, hold life tenure under Article III.

Supreme Court of the United States

The Supreme Court is the only court created directly by the Constitution. It consists of the Chief Justice of the United States and eight Associate Justices. The number of Justices has been fixed at nine since the Judiciary Act of 1869, though Congress retains the constitutional authority to change its size. The Court convenes annually for the October Term, which typically begins on the first Monday in October and runs through late June or early July.

The Supreme Court’s jurisdiction is primarily appellate and almost entirely discretionary. Under 28 USC § 1257, parties seeking review file a petition for a writ of certiorari. The Court grants certiorari to approximately 70–80 of the 7,000–8,000 petitions filed each Term, or roughly 1%. The Rule of Four governs: certiorari is granted if at least four Justices vote to hear the case. Petitions are screened through the cert pool, a centralized system in which law clerks from participating Justices prepare joint memoranda summarizing each case. In recent Terms, some Justices have opted out of the pool.

The Court retains original jurisdiction under Article III § 2 in cases affecting ambassadors and in controversies between states. These cases are rare; the most common original actions are disputes between states over water rights, boundaries, and interstate compacts. In such cases, the Court typically appoints a special master to take evidence and make preliminary findings.

The Chief Justice presides at the Court’s public sessions and private conferences, assigns the writing of opinions when in the majority, and serves ex officio as the head of the Judicial Conference of the United States. The Chief Justice also presides over presidential impeachment trials in the Senate, as occurred in 1868 (Andrew Johnson), 1999 (Bill Clinton), and 2020 (Donald Trump).

Specialized Federal Courts

The United States Court of International Trade, established under Article III, has nationwide jurisdiction over civil actions arising under the tariff and trade laws of the United States. It sits in New York City and has nine judges. Decisions are appealable to the Federal Circuit.

The United States Court of Federal Claims, also an Article III court since the Federal Courts Administration Act of 1992, has jurisdiction over money claims against the United States founded on the Constitution, federal statutes, executive regulations, or government contracts. It has 16 judges and sits in Washington, DC, though it may hear cases elsewhere.

The United States Tax Court is a legislative court under Article I rather than an Article III court. It has 19 judges who serve 15-year terms and specializes in adjudicating disputes between taxpayers and the Internal Revenue Service. Its decisions are appealable to the regional courts of appeals.

Bankruptcy courts are units of the district courts. There are 350 authorized bankruptcy judgeships. Bankruptcy judges are appointed by the court of appeals of the circuit in which the district is located. Appeals from bankruptcy decisions are heard by the district court or by a Bankruptcy Appellate Panel where one exists, and thereafter by the court of appeals.

Judicial Appointment and Removal

All Article III judges are appointed by the President of the United States and confirmed by the Senate, as required by the Appointments Clause of Article II § 2. The process begins with the President, acting through the Attorney General and the White House Counsel’s office, identifying candidates. For district court vacancies, home-state senators of the President’s party traditionally exercise substantial influence through senatorial courtesy. The Senate Judiciary Committee holds confirmation hearings, after which the full Senate votes. Confirmation requires a simple majority vote, following the elimination of the filibuster for judicial nominees in 2017.

The American Bar Association’s Standing Committee on the Federal Judiciary evaluates nominees and assigns a rating of “Well Qualified,” “Qualified,” or “Not Qualified.” While these ratings are influential, they are not determinative. The Trump administration declined to submit nominations to the ABA in advance, and the Biden administration restored the practice.

Under Article II § 4, federal judges may be removed only through impeachment by the House of Representatives and conviction by the Senate. Only 15 federal judges have been impeached and only 8 convicted and removed. The most recent removal was Judge G. Thomas Porteous Jr. in 2010. Resignation before the conclusion of impeachment proceedings is more common: Judge Alcee Hastings was impeached and convicted but the Senate did not disqualify him from future office, and he was later elected to the House of Representatives.

Administration of the Federal Courts

The Judicial Conference of the United States, chaired by the Chief Justice, is the principal policy-making body for the federal judiciary. It is composed of the Chief Justice, the chief judges of each circuit, the chief judge of the Court of International Trade, and a district judge from each circuit. The Judicial Conference oversees the administration of the courts, promulgates rules of procedure, and makes recommendations to Congress on judicial matters.

The Administrative Office of the United States Courts (AO), created by Congress in 1939, provides administrative support to the federal judiciary. The AO is headed by a Director appointed by the Chief Justice in consultation with the Judicial Conference. The AO manages the judiciary’s budget of approximately $8 billion, oversees court operations, collects statistical data, and provides technology and human resources support.

Each circuit has a circuit judicial council composed of the circuit’s active and senior judges, which handles administrative matters and judicial misconduct complaints under the Judicial Conduct and Disability Act of 1980. The councils review complaints of judicial misconduct and may impose sanctions ranging from private reprimands to orders that no further cases be assigned to a judge.

The federal judiciary remains structurally independent within the federal government, with its own budget submitted to Congress without executive revision, its own rulemaking authority for procedural matters, and its own administrative apparatus. This independence, anchored in the structural protections of Article III, ensures the judiciary’s capacity to exercise the power of judicial review first asserted in Marbury v. Madison (1803) and to serve as a coequal branch of the federal government.