United Article III, section 2, of the United States Constitution, jurisdiction of the federal courts is limited to the following:

  1. cases, in law and equity arising under the Constitution, Laws of the United States and Treaties;
  2. cases affecting ambassadors, public ministers and consuls;
  3. cases of admiralty and maritime jurisdiction;
  4. controversies to which the United States shall be a party;
  5. controversies between two or more states;
  6. cases between a state and citizens of another state; and
  7. cases between citizens of different states.

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