
The federal court system in the United States is a complex network of courts that operate within a constitutional system of checks and balances. While the federal courts do not write laws, they play a crucial role in interpreting and applying the law, resolving disputes, and ensuring justice. The federal court system is structured with the Supreme Court at the apex, followed by 13 appellate courts or courts of appeals, and 94 district or trial courts at the grassroots level. The federal courts' jurisdiction is limited to cases arising under the Constitution, federal statutes, and treaties, with certain specific exceptions, such as diversity jurisdiction. The federal courts' decisions are enforced by the executive branch, maintaining a delicate balance of power between the three branches of government: the legislative, executive, and judicial.
| Characteristics | Values |
|---|---|
| Number of Justices in the Supreme Court | 9 |
| Appointment of Justices | Appointed by the President and confirmed by the Senate |
| Tenure of Justices | Life |
| Federal courts' jurisdiction | Limited |
| Types of jurisdiction | Original jurisdiction, diversity jurisdiction |
| Number of appellate courts below the U.S. Supreme Court | 13 |
| Number of district or trial courts | 94 |
| Number of bankruptcy courts | 90 |
| Number of circuit court judges | 6 in the First Circuit, 29 in the Ninth Circuit |
| Appointment of circuit court judges | Appointed for life by the President and confirmed by the Senate |
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What You'll Learn

Federal courts are courts of limited jurisdiction
The United States Constitution limits the subject-matter jurisdiction of federal courts. However, their territorial and personal jurisdiction is not limited. Congress, within its enumerated powers, can expand the reach of federal courts. For example, Congress can authorize global jurisdiction over any suit within Article III. The existing mix of statutes and procedural rules is considered valid.
There are 94 district or trial courts, also known as U.S. district courts, that handle trials within the federal court system. Each district court has at least one United States District Judge, appointed by the President and confirmed by the Senate for a life term. District courts resolve disputes by determining the facts and applying the law to those facts. They handle both civil and criminal cases.
Sometimes, the jurisdiction of state courts will overlap with that of federal courts, meaning some cases can be brought in both courts. The plaintiff has the initial choice of bringing the case in state or federal court. However, if the plaintiff chooses a state court, the defendant may sometimes choose to "remove" the case to federal court. Cases that are entirely based on state law may be brought in federal court under the court's "diversity jurisdiction". Diversity jurisdiction allows a plaintiff of one state to file a lawsuit in federal court when the defendant is located in a different state. To bring a state law claim in federal court, all plaintiffs must be located in different states than the defendants, and the "amount in controversy" must exceed $75,000. It is important to note that criminal cases may not be brought under diversity jurisdiction.
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The US Constitution creates a federal system of government
The US Constitution establishes a federal system of government, which is a governmental structure that divides power between a national government and various state governments. The US Constitution outlines the powers of the federal government and the rights of the states, with the national government responsible for issues that impact the entire country, such as national defence and interstate commerce, and state governments handling more localised matters.
The US Constitution is the supreme law of the land, and it establishes a system of checks and balances to ensure that no one branch of government becomes too powerful. The Constitution divides the federal government into three branches: the legislative, executive, and judicial branches. The legislative branch, or Congress, is responsible for creating federal laws, which are then signed by the President of the United States, who heads the executive branch. The judicial branch, which includes the federal court system, interprets the laws and ensures that the other branches do not exceed their constitutional powers.
The federal court system plays a crucial role in maintaining the balance of power between the federal and state governments. Federal courts are courts of limited jurisdiction, meaning they can only hear cases that arise under the US Constitution, federal statutes, or treaties. These courts include the US district courts, which are the trial courts that handle cases involving federal laws, and the US courts of appeals, which review the decisions of the lower courts. The Supreme Court of the United States is the highest court in the federal judiciary and has the final say on constitutional matters.
The Supreme Court has played a significant role in shaping the balance of power between the federal and state governments. For example, in the early 20th century, the Court used the Tenth Amendment to limit Congress's power and invalidate federal statutes that infringed on state sovereignty. However, after 1937, the Court's stance shifted, and it no longer viewed the Tenth Amendment as a basis for declaring federal laws unconstitutional. This shift allowed for the expansion of federal power and the development of "Fundamental Rights Federalism" through the Reconstruction Amendments.
In conclusion, the US Constitution establishes a federal system of government that divides power between the national and state governments. The federal court system, as part of the judicial branch, plays a crucial role in maintaining the balance of power by interpreting the laws and ensuring that the actions of the legislative and executive branches are in line with the US Constitution.
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The US Supreme Court is the highest court
The Supreme Court's decisions are binding and create precedent in American law. When more than half of the justices join an opinion, it is called a "majority opinion" and sets a binding precedent. On the other hand, when fewer than half of the justices agree, it is a "plurality opinion," which is only partially binding. Additionally, the Court can limit the powers of the executive branch, as seen in the 2014 case of National Labor Relations Board v. Noel Canning, where it restricted the president's ability to make recess appointments.
The US Supreme Court is part of the judicial branch of the US government, which operates within a system of checks and balances with the legislative and executive branches. While the legislative branch passes federal laws, the Supreme Court decides on their constitutionality and resolves cases involving these laws. The federal district court is the starting point for cases arising under federal statutes, the Constitution, or treaties, and it has original jurisdiction in these matters.
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The judicial branch decides constitutionality of federal laws
The US Constitution establishes a system of checks and balances between the three branches of government: the legislative, the executive, and the judicial. Each branch has its own distinct roles and areas of authority. The judicial branch, in particular, has the power to decide the constitutionality of federal laws and resolve other cases involving federal laws. This power of judicial review is essential in ensuring that each branch of government recognises the limits of its own power.
The federal courts are courts of limited jurisdiction, meaning they can only hear cases authorised by the US Constitution or federal statutes. The federal district court is the starting point for any case arising under federal statutes, the Constitution, or treaties, and this type of jurisdiction is called original jurisdiction. The Supreme Court has original jurisdiction over certain cases, such as suits between two or more states and cases involving ambassadors and other public ministers. It has appellate jurisdiction on almost any other case that involves a point of constitutional and/or federal law.
The US Supreme Court is the highest court in the United States, with 13 appellate courts sitting below it, called the US Courts of Appeals. The appellate court's task is to determine whether the law was applied correctly in the trial court or federal administrative agency. The nation's 94 district or trial courts are called US district courts, and they resolve disputes by determining the facts and applying the law to those facts.
The Supreme Court's power of judicial review is not explicitly mentioned in the Constitution but was established in the case of Marbury v. Madison in 1803. The Court held that an Act of Congress that is contrary to the Constitution could not stand, as the Constitution establishes the supreme law of the land. This power allows the Court to declare a Legislative or Executive act in violation of the Constitution, ensuring that the changing views of a majority do not undermine fundamental values such as freedom of speech, freedom of religion, and due process of law.
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Circuit court judges are appointed for life
The federal courts are part of the judicial branch of the US government, which operates within a constitutional system of "checks and balances". This means that although the judicial branch is formally separate from the legislative and executive branches, the Constitution often requires cooperation among the three. While federal courts do not write laws, they do have the authority to decide the constitutionality of federal laws and resolve other cases involving federal laws.
Federal judges, including circuit court judges, are selected by the President and confirmed by the Senate. Circuit court judges are appointed for life, although they may resign or retire earlier. They can also be removed by impeachment by the House of Representatives and conviction by the Senate. Circuit court judges preside over appeals from district court decisions. Each circuit court has multiple judges, ranging from six on the First Circuit to twenty-nine on the Ninth Circuit.
The US Court of Appeals, which sits below the US Supreme Court, is made up of 13 appellate courts. These courts determine whether the law was applied correctly in the trial court or federal administrative agency. Appeals to circuit courts are first heard by a panel of three circuit court judges. After the briefs are filed, the court schedules "oral argument", where lawyers come before the court to make their arguments and answer the judges' questions. Although rare, certain appeals may be considered by the entire circuit court in a process called an "en banc hearing".
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Frequently asked questions
No, federal courts cannot write laws. Federal courts are part of the judicial branch of the government, which operates within a system of checks and balances. The judicial branch decides the constitutionality of federal laws and resolves cases involving federal laws. Federal laws are passed by Congress and signed by the President.
The U.S. Supreme Court is the highest court in the United States. It has nine Justices, who are appointed by the President and confirmed by the Senate. The Supreme Court decides appeals on all cases brought in federal or state courts.
Federal courts have limited jurisdiction, meaning they can only hear cases arising under the United States Constitution or federal statutes. This includes cases involving federal laws, the Constitution, or treaties. Federal courts also have diversity jurisdiction, which allows plaintiffs from one state to file lawsuits against defendants from another state.












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