What types of cases do Federal District Courts primarily deal with?

Federal District Courts primarily deal with felony trials in the context of criminal law. These courts have jurisdiction over federal offenses, which are violations of federal statutes. Because felonies are serious crimes that carry significant penalties, they are handled at the federal level in District Courts when they involve federal laws, crossing state lines, or federal interest.

Additionally, Federal District Courts also handle various civil cases, including cases involving federal law, constitutional issues, and disputes between states or international parties, but felony trials are a major component of their responsibilities. While other options listed pertain to important aspects of law, they either fall under state jurisdiction or do not align exclusively with the primary functions of Federal District Courts.