Senate executive A-J, 79th Congress, 2d session. D. Protocol relating to international sanitary convention, 1944, modifying international sanitary convention of June 21, 1926. protocol to prolong international sanitary convention, 1944, modifying international sanitary convention of June 21, 1926, which was signed in Washington on behalf of United States, Apr. 30, 1946, with reservation, subject to ratification.