The eight types of cases that are heard in federal courts are: 1. Cases related to the U.S. constitution 2. Violations of federal laws (as listed above) 3. Disagreements among state governments 4. Lawsuits that involve citizens in different states 5. Someone suing or being sued by the U.S. government 6. Disputes that include foreign governments 7. Maritime laws and violations 8. Cases in foreign nations that involve U.S. officials