Treaties and other international acts series. 5920. Double taxation, taxes on income, protocol between United States and Federal Republic of Germany, modifying convention of July 22, 1954, signed Bonn Sept. 17, 1965 [proclaimed by President of United States Dec. 30, 1965; entered into force Dec. 27, 1965] with memorandum of understanding signed Bonn Oct. 19, 1965.