CONTROVERSY. A dispute arising between two or more persons. It differs from case, which includes all suits criminal as well as civil; whereas controversy is a civil and not a criminal proceeding. 2 Dall. R. 419, 431, 432; 1 Tuck. Bl. Com. App. 420, 421; Story, Const. 1668.
2. By the constitution of the United States the judicial power shall extend to controversies to which the United States shall be a party. Art. 2, 1. The meaning to be attached to the word controversy in the constitution , is that above given.