The structure of the Supreme Court is set partly by the Constitution and partly by acts of Congress: nine justices sit for life after presidential appointment and Senate confirmation, they select most of their own cases through discretionary review, and they work through an annual term that runs from the first Monday in October into the following summer, supported by law clerks in each justice’s chambers and a permanent staff of court officers. The rest of the structure — how cases are chosen, argued, decided, and written up — follows from those basics.
The Nine Justices
The Court has nine members: one Chief Justice and eight Associate Justices.1United States Courts. About the Supreme Court The Constitution created the Court in Article III but left the number of seats to Congress, which fixed it at nine in 1869 after several changes during the Court’s first eighty years.2Supreme Court of the United States. The Court as an Institution
There are no formal qualifications for the job. The Constitution sets no minimum age, no citizenship requirement, and no requirement of legal training, though every justice in the Court’s history has been a lawyer.3Supreme Court of the United States. Frequently Asked Questions – General Information
On legal questions the nine votes carry equal weight. The Chief Justice’s distinct role is administrative and procedural: presiding at oral argument, leading the private conferences where cases are discussed and voted, and chairing the Judicial Conference of the United States, which manages the federal court system’s budget and rules.4Office of the Law Revision Counsel. 28 U.S.C. 331 – Judicial Conference of the United States
Appointment, Tenure, and Removal
Article II gives the President the power to nominate justices with the Senate’s advice and consent.5Congress.gov. Constitution Annotated – Article II Section 2 Clause 2 A nomination is referred to the Senate Judiciary Committee, which investigates the nominee, holds hearings, and reports the nomination to the full Senate. Confirmation requires a simple majority of senators present and voting.6Congress.gov. Senate Consideration of Presidential Nominations
Once confirmed, a justice holds office “during good Behaviour,” which functions as a life appointment.7Congress.gov. Good Behavior Clause Doctrine Salary cannot be reduced during a justice’s service. Both protections were designed to insulate the Court from political pressure.
A justice who wants to reduce their caseload without leaving the judiciary can take senior status. The eligibility formula slides with age and service: 65 with 15 years, or 70 with 10.8Office of the Law Revision Counsel. 28 U.S.C. 371 – Retirement on Salary; Retirement in Senior Status Full retirement under the same formula pays a lifetime annuity equal to the salary at retirement.
Involuntary removal happens only through impeachment: the House brings charges, the Senate tries them, and a two-thirds Senate vote is required for conviction.9USAGov. How Federal Impeachment Works No Supreme Court justice has ever been removed this way.
What Cases the Court Hears
The Court has two kinds of jurisdiction. Original jurisdiction, spelled out in Article III, covers cases involving ambassadors, public ministers, consuls, and disputes where a state is a party; these begin at the Supreme Court.10Congress.gov. Original Cases Affecting Ambassadors, Public Ministers, and Consuls They are a small share of the docket.
Almost everything else arrives on appeal through a petition for a writ of certiorari. Reforms in 1891 and 1988 converted nearly all appellate review into discretionary review, meaning the Court chooses which cases to hear.11Congress.gov. Supreme Court Appellate Jurisdiction The justices receive roughly 130 petitions each week and grant full review to only a small fraction.12Supreme Court of the United States. The Court and Its Procedures It takes four votes to grant certiorari, a practice known as the Rule of Four.13United States Courts. Supreme Court Procedures
Separately, the Court handles emergency applications on what is often called the shadow docket, where a party asks the justices to temporarily block or reinstate a lower court order. These matters involve compressed briefing, no oral argument in most cases, and orders that often come without detailed reasoning. Their use has grown in recent years, particularly in cases challenging federal executive actions.
The Term Calendar
By law, each annual term begins on the first Monday in October and runs until the next October term starts.14Office of the Law Revision Counsel. 28 U.S.C. 2 – Terms of Court In practice, oral arguments run from October into late April, and remaining opinions are released by late June or early July before a summer recess.15Supreme Court of the United States. Supreme Court at Work
During the active months the Court alternates between sittings, when arguments are heard and decisions announced, and recesses, when the justices write opinions and screen new petitions from chambers. Arguments are held Monday, Tuesday, and Wednesday mornings, typically two per day starting at 10:00 a.m.16Supreme Court of the United States. Oral Arguments Live audio of arguments is streamed on the Court’s website.
How the Court Decides a Case
After argument, the justices meet in a private conference with no staff present. The Chief Justice speaks first and offers a tentative position, then each Associate Justice speaks in order of seniority. Voting follows the same order.13United States Courts. Supreme Court Procedures
The opinion-writing assignment goes to the Chief Justice when they are in the majority; when the Chief Justice is in dissent, the most senior justice in the majority assigns the opinion, and the most senior dissenter assigns the principal dissent. Drafts circulate through every chamber before publication, and votes sometimes change during that process.
The Court’s written output comes in several forms. A majority opinion, joined by more than half the justices, establishes binding law. A concurrence agrees with the outcome but on different reasoning. A dissent explains disagreement with the result. When no single rationale attracts a majority, the opinion with the most support is a plurality opinion, announcing the judgment but carrying reduced precedential weight. A per curiam opinion is attributed to the Court as a whole rather than a named author.
Chambers and Law Clerks
Each justice runs an office called chambers, staffed by the justice, law clerks, and administrative assistants. Every justice is entitled to four clerks per term, generally recent top law school graduates serving one-year appointments.
Clerks do much of the analytical work. Their most consequential task is screening certiorari petitions. Most justices participate in a cert pool that divides incoming petitions among clerks from different chambers; each clerk writes a memo recommending action. Petitions that never reach the “discuss list” for conference are denied without debate among the justices, so a single clerk’s memo often determines whether a case gets a serious look. Clerks also research legal questions and help draft opinions.
Officers of the Court
A permanent staff keeps the Court running across generations of justices. The Clerk of the Court oversees the docket, processes filings, and maintains official case records. The Marshal handles security, manages the Court’s finances and property, and opens each public session as the traditional crier. The Reporter of Decisions supervises the preparation and publication of the United States Reports, the official record of the Court’s opinions.17Supreme Court of the United States. U.S. Reports The Librarian maintains a research collection of more than 600,000 print volumes along with electronic resources. The Public Information Office manages press relations and runs the pressroom where credentialed reporters access opinions and orders as they are released.18Supreme Court of the United States. News Media
Ethics Rules That Bind the Justices
The Court adopted its first written Code of Conduct in November 2023.19Supreme Court of the United States. Code of Conduct for Justices of the Supreme Court of the United States It directs justices to uphold the integrity of the judiciary, avoid even the appearance of impropriety, act with impartiality and diligence, refrain from letting personal relationships influence their official conduct, and avoid public comment on the merits of pending cases outside their official duties.
Federal law separately requires any justice to step aside when their impartiality might reasonably be questioned, with specific triggers that include personal bias, a financial interest in the outcome, prior involvement with a party, or a family member serving as a lawyer or witness in the case.20Office of the Law Revision Counsel. 28 U.S.C. 455 – Disqualification of Justice, Judge, or Magistrate Judge The Court’s code adds a presumption that a justice is impartial and has an obligation to sit unless grounds for disqualification exist. A narrow “rule of necessity” allows a justice to participate when the Court could not otherwise hear the case.
No higher court reviews a Supreme Court justice’s recusal decisions; those decisions are self-policed. The only external check remains impeachment.