The international activities of the United States may be divided into four well-defined groups: (1) The regular diplomatic and consular representation in foreign countries; (2) representation at special conferences or congresses; (3) adjudication or arbitration of special issues arising between the United States and another power; and (4) support of international organizations of a permanent character.
Only the fourth group--international organizations of a permanent character--are described in this volume, and the discussion is limited to those for which obligations were in force at the end of 1934. Therefore the volume does not include all international bodies which the United States has aided in supporting, as several of the earlier organizations have been discontinued or the United States has withdrawn its support.
The most prominent of all international organizations --the League of Nations--is not discussed in this volume, as the United States has not adhered to it or contributed to its support. The United States, however, has participated in many of the projects sponsored by that organization. "Gradually a form of co-operation has been evolved, which has made it possible for the United States to play an increasing role in the League of Nations, and which, at the same time, does not involve the United States in the work of the Assembly and Council."1____________________