Where are most federal cases typically heard?

Most federal cases are typically heard in District Courts, which are the general trial courts of the federal court system. These courts have jurisdiction over a wide range of cases, including civil and criminal matters that fall under federal law. Each state has at least one District Court, with larger states having multiple districts, allowing for a broad application of federal law across the country.

The Supreme Court primarily serves as the highest appellate court and hears cases that have already been decided by lower courts, usually involving significant constitutional questions or federal law issues. While Circuit Courts (or Courts of Appeals) are also part of the federal judiciary, they mainly handle appeals from District Courts rather than conducting trials.

State Courts handle cases involving state laws and are separate from the federal court system. Therefore, the correct answer highlights the primary venue where federal cases are initiated and litigated, underscoring the structure and function of the federal judicial system.