the legal system of the united states is based on the english common law
Law of the United States At both the federal and state levels, with the exception of the state of Louisiana, the law of the United States is largely derived from the common law system of English law, which was in force at the time of the American Revolutionary War.[14][15] However, American law has diverged greatly from its English ancestor both in terms of substance and procedure,[16] and has incorporated a number of civil law innovations.
Judiciary The judiciary (also known as the judicial system or court system) is the system of courts that interprets and applies the law in the name of the state. The judiciary also provides a mechanism for the resolution of disputes. Under the doctrine of the separation of powers, the judiciary generally does not make statutory law (which is the responsibility of the legislature) or enforce law (which is the responsibility of the executive), but rather interprets law and applies it to the facts of each case. However, the judiciary does make common law, setting precedent for other courts to follow. This branch of the state is often tasked with ensuring equal justice under law.