Treaties and other international acts series. 2044. Fisheries, establishment of Inter-American Tropical Tuna Commission, convention between United States and Costa Rica, signed Washington May 31, 1949, ratifications exchanged at Washington Mar. 3, 1950, proclaimed by President, Mar. 23, 1950; entered into force Mar. 3, 1950, and exchange of notes signed Washington Mar. 3, 1950.