A federal district court must be consulted before any lawsuit involving the Constitution, agreements, or federal laws is filed. The trial courts of the federal court system are the district courts, which hear both criminal and civil cases.
The constitutionality of laws, admiralty law, often known as maritime law, bankruptcy lawsuits, disputes between two or more states, laws and treaties enacted by American ambassadors and public ministers, and the constitutionality of statutes are all reviewed by federal courts.
The U.S. Constitution specifies the categories of matters that fall under the federal courts' purview. Federal courts usually only consider situations involving constitutional or legal violations, crimes committed on federal property, crimes committed in bankruptcy, and instances in which the United States is a participant.
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