Cameron Miranda
The US legal system is a common law system, which is one of the two main legal systems used in the world, the other being civil law systems. Common law systems rely on caselaw and legal precedent to guide their decisions, whereas civil law systems rely primarily on codes and statutes. The US legal system is based on the common law system of English law, which was in force in British America at the time of the American Revolutionary War. However, American law has since diverged significantly from English common law, incorporating a number of civil law innovations.
| Characteristics | Values |
|---|---|
| Basis | The US legal system is based on the common law system of English law, which was in force in British America at the time of the American Revolutionary War. |
| Sources | The law is derived from constitutional law, statutory law, treaties, administrative regulations, and the common law (which includes case law). |
| Federal court system | The federal court system is based on a three-tiered structure, with the United States District Courts as the trial-level courts, the United States Court of Appeals as the first level of appeal, and the United States Supreme Court as the final arbiter of the law. |
| Stare decisis | The principle of stare decisis is followed, where courts adhere to the decisions of higher-level courts within the same jurisdiction, creating a predictable and consistent body of law. |
| Precedent | Judicial determinations in earlier court cases are critical to resolving new cases, and the doctrine of precedent has been developed over centuries. |
| Case-based reasoning | The form of reasoning used is casuistry or case-based reasoning, also known as case law or judge-made law. |
| Civil law | The US legal system has incorporated civil law innovations, diverging from pure common law in some aspects. |
| Procedural law | There is a distinction between procedural law, which governs the process of enforcing legal rights and duties, and substantive law, which constitutes the substance of the law. |
| Criminal law | Criminal law involves the prosecution by the state of wrongful acts considered serious breaches of the sovereign's peace. |
| Family law | Family law, a relatively new area of law in the US compared to Europe, governs relationships between adults and between parents and children. |
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What You'll Learn
US common law is derived from English common law
The US common law system is derived from English common law, which originated in medieval England. Common law is a body of unwritten laws based on legal precedents established by the courts. It is characterised by its reliance on precedent, with courts following the decisions of higher-level courts within the same jurisdiction. This is known as the doctrine of stare decisis, which developed during the 12th and 13th centuries alongside the concept of common law.
US common law, therefore, has its roots in English legal traditions and has been influenced by English common law principles. This is reflected in the adversarial nature of the US legal system, where disputes are resolved through a process of argument and counter-argument, with a focus on precedent and prior court decisions. The US federal court system, for example, follows a three-tiered structure, with the United States District Courts as the trial-level courts, the United States Court of Appeals as the first level of appeal, and the United States Supreme Court as the final arbiter of the law.
While the US legal system has evolved and adapted to suit the needs and values of the United States, the influence of English common law remains evident. This is particularly true in the area of civil law, where the US system is based on a comprehensive, codified set of legal statutes created by legislators. Civil law clearly defines the procedures for handling claims and the punishments for offences, and it is regularly updated to maintain a standardised code.
However, it is important to note that the US legal system, like that of the UK, operates under a dual system of both common and civil law. While common law forms the basis of the US legal system, civil law principles are also incorporated, particularly in certain states with unique legal histories, such as Louisiana, which is the only civil law state in the US.
In conclusion, US common law is derived from English common law, and this historical connection continues to shape the US legal system today, alongside the influence of civil law and the unique adaptations of American jurisprudence.
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US common law is distinct from civil law
The US common law system is distinct from civil law in several ways. Firstly, common law is a body of unwritten laws based on legal precedents and judicial interpretations, whereas civil law relies on written codes that explicitly provide rules and procedures for handling disputes. While civil law systems like the one used in France have a clear framework for which cases can be brought to court and how they should be handled, common law is more flexible and allows for interpretation. This is because common law is based on the principle of stare decisis, which means that higher courts within the same jurisdiction must follow the decisions of lower courts, creating a predictable and consistent body of law over time.
Another key difference is the role of precedent in each system. Common law systems place great weight on precedent, with judges relying on past judicial determinations and doctrines to resolve new cases. Civil law systems, on the other hand, tend to give less weight to precedent and more weight to codified rules and legislative decisions. For example, in some civil law jurisdictions, judges do not have the authority to invalidate legislative provisions and must apply the code as written. This is in contrast to common law, where judges can adapt the law to situations not contemplated by the legislature.
The type of reasoning used in each system also differs. Common law uses a form of reasoning known as casuistry or case-based reasoning, which involves applying prior court decisions and doctrines to new cases. Civil law, on the other hand, is based on Roman law and uses a more codified and systematic approach to reasoning. Despite these differences, there has been some convergence between the two systems over time, with common law countries adopting codes in certain areas of law, such as bankruptcy and intellectual property, and civil law judges incorporating common law principles into their decisions.
The US operates under a dual system of both common and civil law. The federal court system is an example of a common law system, where judges rely on precedent and interpretation to make decisions. On the other hand, the US has also adopted codified frameworks, such as the Uniform Commercial Code (UCC), which governs commercial law and has been enacted in all 50 states. The distinction between common law and civil law in the US can also be seen in the historical separation of law and equity, where law provided money damages and equity provided injunctive relief, although these were combined into "civil actions" in 1937.
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![The Common Law; Its Origin, Sources, Nature, and Development, and What the State of New York Has Done to Improve Upon It, by Charles P. Daly 1894 [Leather Bound]](https://m.media-amazon.com/images/I/617DLHXyzlL._AC_UY218_.jpg)
US common law is based on precedent
The US common law system is based on precedent. It is a system that draws from judge-made law, case law, or precedent, which is a set of unwritten laws based on legal precedents established by the courts. This is in contrast to civil law, which is a comprehensive, codified set of legal statutes created by legislators. US common law is derived from its original appearance in medieval England, and it is still very much in effect in the US today. The doctrine of precedent developed during the 12th and 13th centuries, as the collective judicial decisions that were based on tradition, custom, and precedent.
The defining principle of common law is the requirement that courts follow the decisions of higher-level courts within the same jurisdiction. This is known as stare decisis, which has resulted in a predictable and consistent body of law. The federal court system in the US is based on a three-tiered structure, with the United States District Courts as the trial-level courts, the United States Court of Appeals as the first level of appeal, and the United States Supreme Court as the final arbiter of the law.
The form of reasoning used in common law is known as casuistry or case-based reasoning. Common law may be distinguished from civil law in that it places a great emphasis on precedent while allowing some freedom for interpretation. This is advantageous as the law can be adapted to situations that were not contemplated at the time by the legislature. In civil law systems, judges rely less on court precedent and more on codes that explicitly provide rules of decision for specific disputes.
In the US, the federal courts are divided into twelve regional circuits, each with a circuit court of appeals. Decisions of one circuit court are binding on the district courts within the circuit and on the circuit court itself, but they are only persuasive authority on sister circuits. District court decisions are not binding precedent and are only persuasive.
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US common law is used at both federal and state levels
The US legal system is based on common law, which is a body of unwritten laws based on legal precedents established by the courts. Common law may refer to "judge-made" law, also known as case law. The defining principle of common law is the requirement that courts follow the decisions of higher-level courts within the same jurisdiction. This is known as the doctrine of stare decisis, which has given rise to a predictable and consistent body of law.
At the federal level, there is no general federal common law. Federal courts can create federal common law in the form of case law, but it must be linked to the interpretation of a particular federal constitutional provision, statute, or regulation. In a few areas, such as maritime law, the Constitution has expressly authorized the continuation of English common law.
At the state level, US common law is used in individual states and territories, with the partial exception of Louisiana and Puerto Rico. State courts have the power to formulate legal precedent, allowing them to make up law in the absence of constitutional or statutory provisions.
Common law is particularly valuable as it allows for adaptability in situations not previously contemplated by the legislature. However, the reliance on precedent can also lead to outdated or biased decisions that shape future rulings until societal changes prompt a judicial body to overturn the precedent.
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US common law is one of five sources of US law
The US legal system is based on the principle that a real, live dispute involving parties with a genuine interest in its outcome will allow for a vigorous legal debate of the issues. The federal courts are prohibited from issuing opinions that do not involve a live case or controversy. The US legal system is derived from five sources: constitutional law, statutory law, treaties, administrative regulations, and the common law (which includes case law).
Constitutional law forms the foundation of the US legal system and defines the organisation and powers of the government, as well as the protection of individual liberties. Federal and state statutes are created by federal, state, and local legislatures and contain sections such as preamble, definitional, procedural, substantive, and construction. Common law refers to law that has not been codified but is applied by courts based on tradition and legal history. It is derived from the common law system of English law, which was in force in British America during the American Revolutionary War. Case law, or "judge-made" law, refers to law that comes directly from court decisions and includes judicial interpretations of the Constitution, statutes, or common law.
Administrative law refers to the regulations created by administrative agencies, which are part of the executive branch and charged with administering government functions. Treaties are another source of US law, which outlines the country's relationships and obligations with other nations. The US legal system has evolved over time, with American courts developing their own principles and precedents to resolve legal issues. The law varies across states, with each state having its own constitution and laws, creating a diverse legal landscape in the US.
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Frequently asked questions
Common law is one of the two main legal systems used today, the other being civil law. Common law relies on caselaw and legal precedent to guide decisions, while civil law systems rely primarily on codes and statutes.
The law of the United States is largely derived from the common law system of English law, which was in force in British America at the time of the American Revolutionary War. However, American law has since diverged significantly from English common law.
The US legal system is adversarial and based on the premise that a real, live dispute involving parties with a genuine interest in its outcome will allow for the most truthful and fair resolution. It is also based on the principle of stare decisis, which means that courts follow the decisions of higher-level courts within the same jurisdiction.
