How the Supreme Court Works: Justices, Cases, and Decisions

The Supreme Court Receives 7,000–8,000 Petition Requests Each Year and Accepts Roughly 70

The United States Supreme Court is the most selective appellate body in the American legal system. Of the thousands of petitions for certiorari filed annually, the Court agrees to hear fewer than 1% — typically 65–80 cases per term. The justices choose cases that present unsettled questions of federal law, resolve conflicts between different circuit courts, or address constitutional issues of national significance. Understanding the Court's structure, selection process, and decision-making mechanism explains both its enormous power and its deliberate limitations.

Structure and Composition

The Supreme Court consists of nine members: one Chief Justice and eight Associate Justices. The number nine was established by Congress in 1869 and has remained constant ever since, though the Constitution does not specify the number of justices. All justices serve during "good behavior" — effectively lifetime appointments barring impeachment. The only Supreme Court justice ever impeached, Samuel Chase in 1804, was acquitted by the Senate.

• The Chief Justice presides over oral arguments, assigns opinion writing when in the majority, and leads the Court's administrative functions
• Associate Justices have equal voting power — the Chief Justice's vote counts the same as any other
• A justice may recuse themselves from a case due to conflicts of interest; recusals can create 4-4 ties that have no precedential value

How Justices Are Appointed

Supreme Court justices are nominated by the President and confirmed by the Senate. The Constitution sets no formal qualifications — no requirement for legal training, age, or prior judicial experience. In practice, all current justices attended law school and served as federal appellate judges before elevation.

The confirmation process has evolved significantly:

• Nominees appear before the Senate Judiciary Committee for several days of questioning
• A simple majority vote in the full Senate confirms or rejects the nominee (the 60-vote supermajority threshold for judicial nominees was eliminated in 2017)
• Recess appointments to the Court are constitutionally permitted but historically rare and controversial

How Cases Reach the Court: The Certiorari Process

Oral Arguments

Each accepted case receives one hour of oral argument — typically 30 minutes per side. Attorneys present their positions, but questioning from justices frequently dominates the session. The format is considerably more active than most courtrooms: justices interrupt freely, pose hypotheticals, and use argument time to persuade colleagues as much as to question counsel.

Oral arguments are open to the public (on a first-come, first-served basis) and transcripts are posted same-day. Audio recordings are released at the end of each week. Cameras have never been permitted in the Supreme Court chamber, though multiple legislative proposals to change this have been introduced over the years.

The Decision Process

After oral argument, justices meet in private conference — clerks are excluded. The Chief Justice speaks first, followed by associates in order of seniority. A majority vote (5 of 9, or a plurality when no reasoning commands a majority) controls the outcome. The senior justice in the majority assigns opinion writing to one member of that coalition.

• Majority opinion: The binding precedent of the Court, joined by five or more justices
• Concurring opinion: Agrees with the outcome but for different or additional reasons
• Dissenting opinion: Disagrees with the majority; may become influential in future cases
• Per curiam opinion: Unsigned opinion issued by the Court as a whole, often in emergency or summary cases

The Doctrine of Stare Decisis and Overruling Precedent

Stare decisis — the doctrine that courts follow prior decisions — binds lower courts absolutely to Supreme Court precedent. The Supreme Court itself is not bound by its own prior decisions, but overruling precedent requires a substantial justification. The Court has overruled itself approximately 145 times in its history. Factors considered include whether the prior ruling was workable in practice, whether subsequent developments have eroded its legal underpinnings, and what reliance interests exist in maintaining it.

Jurisdiction: What the Court Can and Cannot Hear

The Court cannot hear purely state law questions, advisory opinions on hypothetical cases (it has no advisory opinion jurisdiction), or cases from parties without standing. These limitations mean that many significant legal disputes are decided by federal circuit courts and state supreme courts, without any possibility of Supreme Court review.

This article is for informational purposes only and does not constitute legal advice.