Cecily Zamora
The US federal government is divided into three branches: legislative, executive, and judicial. The judicial branch, which includes the Supreme Court, hears cases about laws. The Supreme Court is the highest court in the country and has the final say on matters of federal law. Federal courts are the only ones with the power to interpret the law, determine its constitutionality, and apply it to individual cases. The legislative branch, which includes Congress, is the only branch with the authority to create new laws or change existing ones. The executive branch, headed by the President, enforces court decisions and signs federal laws into effect.
| Characteristics | Values |
|---|---|
| Number of branches | 3 (legislative, executive, and judicial) |
| Branch that hears cases about laws | Judicial |
| Courts that hear cases | District court, appellate court, Supreme Court |
| Court's caseload nature | Almost entirely appellate |
| Court with original jurisdiction | Supreme Court |
| Court with the power to interpret the law | Federal courts |
| Court with the power to determine the constitutionality of the law | Federal courts |
| Court with the power to apply the law to individual cases | Federal courts |
| Court with the power to issue subpoenas | Federal courts and Congress |
| Courts that are constrained by the decisions of the Supreme Court | Inferior courts |
| Courts that hear trials | Trial courts (judge or jury) |
| Courts that hear appeals | Appellate courts |
| Courts that hear cases involving ambassadors and diplomats | Supreme Court |
| Courts that hear cases between states | Supreme Court |
| Courts that hear appeals from federal appellate courts | Supreme Court |
| Courts that hear appeals from the highest state courts | Supreme Court |
| Courts that set future precedent | Various courts |
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What You'll Learn
The US judicial branch hears cases about laws
The US Constitution divides the federal government into three branches: the legislative, the executive, and the judicial. The judicial branch, also known as the US federal court system, has the authority to hear cases about laws and decide their constitutionality. It also resolves other cases involving federal laws.
The US federal court system consists of the Supreme Court and the inferior courts, which include the 94 district or trial courts, and the appellate courts. A case typically starts at the district court level, where evidence and witnesses are presented, and the court determines the facts and applies the law to those facts. If a party is unsatisfied with the outcome, they can appeal to an appellate court, which will rule on questions of law rather than questions of fact. The Supreme Court is the final judicial arbiter in the country on matters of federal law, and the inferior courts are bound by its decisions.
The Supreme Court usually does not hold trials. Instead, it interprets the meaning of a law, decides whether a law is relevant to a particular set of facts, or rules on how a law should be applied. The Supreme Court may hear an appeal on any question of law, provided it has jurisdiction. However, the Court only grants a writ of certiorari to a small fraction of the thousands of requests it receives each year. These are typically cases that the Court deems sufficiently important, such as when different rulings have been made on the same question of federal law in lower courts.
The Justices of the Supreme Court are nominated by the President and confirmed by the Senate. They have the power to overturn unconstitutional laws.
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Federal courts interpret the law
The federal court system in the United States is the judicial branch of the federal government. It is made up of the Supreme Court and lower federal courts, including the Federal Circuit Court of Appeals. Federal courts have the sole power to interpret the law, determine the constitutionality of the law, and apply it to individual cases.
The Supreme Court is the highest court in the American judicial system and has the power to decide appeals on all cases brought in federal court or those brought in state court but dealing with federal law. The Supreme Court's caseload is almost entirely appellate in nature, and its decisions cannot be appealed to any authority, as it is the final judicial arbiter in the United States on matters of federal law. The Supreme Court usually does not hold trials but interprets the meaning of a law, decides whether a law is relevant to a specific set of facts, or rules on how a law should be applied.
The Supreme Court's task is to interpret the law and ensure that it is applied fairly and consistently. This is done by hearing appeals from lower courts and deciding if the law was applied correctly in a particular case. The Supreme Court also has original jurisdiction in cases involving ambassadors and other diplomats and in cases between states.
Lower federal courts, such as the Federal Circuit Court of Appeals, also play an important role in interpreting the law. These courts hear cases on a wide range of issues, including patents, and their decisions can be appealed to the Supreme Court. The Federal Circuit Court of Appeals has nationwide jurisdiction over specific issues, with the number of judges ranging from six on the First Circuit to twenty-nine on the Ninth Circuit.
The federal court system is an essential part of the checks and balances of the U.S. government, ensuring that the laws are interpreted and applied fairly and consistently. Federal judges, including Supreme Court justices, are appointed by the President and confirmed by the Senate. They can hold their positions for life, but they may also be removed by impeachment by the House of Representatives and conviction by the Senate.
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The Supreme Court interprets and rules on laws
The Supreme Court is the highest court in the United States, serving as the final judicial arbiter on matters of federal law. It plays a crucial role in the constitutional system of government. The Supreme Court's primary function is to interpret the law and rule on its application in specific cases, ensuring that the law is applied consistently and uniformly across the nation.
The Supreme Court's caseload primarily consists of appellate cases, where the Court interprets the meaning of laws, decides on their relevance to particular cases, and rules on their application. The Court's decisions are final and cannot be appealed, making it the court of last resort for those seeking justice. Lower courts are bound by the Supreme Court's interpretations and are obligated to follow its precedents when rendering their decisions.
The Supreme Court has original jurisdiction over specific cases, such as suits between two or more states, cases involving ambassadors and other public ministers, and cases where the United States is a party. In these instances, the Supreme Court may be the first court to hear the case, rather than an appellate court. The Court also has the power to issue writs of mandamus, or legal orders compelling government officials to act in accordance with the law.
The Supreme Court's authority to interpret and rule on laws is established by the Constitution. Article III, Section I of the Constitution vests the judicial power of the United States in the Supreme Court, recognising it as the highest judicial authority. The Judiciary Act of 1789 further outlined the Supreme Court's jurisdiction and established a Supreme Court with six justices. Over time, the number of justices on the Court has varied, but it has been fixed at nine since shortly after the Civil War.
The Supreme Court's role in interpreting and ruling on laws is essential for maintaining the balance of power between the branches of government. The Court ensures that each branch recognises the limits of its power and acts within the framework established by the Constitution. By interpreting the law, the Supreme Court provides clarity and consistency in the application of laws across the nation, contributing to a fair and just legal system.
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The Court of Appeals rules on federal law
The US Constitution divides the federal government into three branches: the legislative, executive, and judicial. The judicial branch is made up of the Supreme Court and inferior federal courts, including federal courts of appeals.
The Court of Appeals routinely handles more than 50,000 cases each year. These courts of appeals review challenges to court decisions to determine whether the proceedings were fair and the law was applied correctly. Federal courts of appeals review the procedures and decisions in the district courts, or trial courts, to ensure fair proceedings and correct application of the law.
Each of the 94 district courts is organised into 12 regional circuits, each with its own court of appeals. A 13th court of appeals, the US Court of Appeals for the Federal Circuit, has nationwide jurisdiction to hear appeals in specialised cases, such as those involving patent laws, and cases decided by the US Court of International Trade and the US Court of Federal Claims.
Court of appeals judges, also called circuit judges, usually sit in a panel of three judges to determine whether the law was applied correctly by a lower court or administrative agency. If the Court of Appeals rules that the law was not applied correctly, it can overturn the decision of the lower court.
In almost all instances, the Supreme Court does not hear appeals as of right. Instead, parties must petition the Court for a writ of certiorari. The Supreme Court usually grants certiorari, or agrees to hear a case, if four of the nine Justices decide they should. The Court grants certiorari to fewer than 150 of the approximately 7,500 requests filed each year.
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Congress passes federal laws
The US Constitution divides the federal government into three branches: the legislative, executive, and judicial. The legislative branch, which includes Congress (the Senate and House of Representatives), is responsible for passing federal laws.
Congress works in two-year legislative sessions tied to the elections. All bills not enacted by the end of a session are discarded, and Congress starts over. As of 2025, there were 7,716 bills and resolutions before Congress, but only about 7% will become law. Bills typically need enough support to pass before they are scheduled for floor action. Most bills must pass cloture to move forward in the Senate, which requires a 3/5ths vote to overcome a filibuster or the threat of one.
Once a bill passes both chambers of Congress, it goes to the president for signature or veto. If the president vetoes the bill, Congress can override the veto by passing the bill again with a 2/3rds majority in both chambers. This is a rare occurrence, as most bills that are vetoed are not overridden.
While Congress passes federal laws, it is the judicial branch that interprets and applies these laws in individual cases. Federal courts have the sole power to interpret the law, determine its constitutionality, and apply it to specific cases. The Supreme Court is the final judicial arbiter in the US on matters of federal law, and lower courts are obligated to follow its precedent.
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Frequently asked questions
The judicial branch of the government hears cases about laws.
The Supreme Court is the highest court in the United States.
The Supreme Court interprets the meaning of a law, decides whether a law is relevant to a particular set of facts, and rules on how a law should be applied. It also hears cases involving ambassadors and other diplomats, and cases between states.
Lower courts include the 94 district or trial courts, also known as U.S. district courts, as well as bankruptcy courts and Article I courts such as the U.S. Court of Appeals for Veterans Claims.
