Organization made intensive studies of key issues upon which any plans for a future world organization would have to depend. In March 1943, Hull formed the Political Agenda Group which was composed of Hackworth, Edward R. Stettinius and other members of Hull's inner circle. This organization championed a global organization as opposed to Undersecretary of State Sumner Welles' vision of a regional post war system. In December 1943, this group prepared and delivered to President Roosevelt a detailed post war plan that became the founding framework of the United Nations. After President Roosevelt approved outline of the plan, Hull created The Policy Committee and the Post War Programs Committee, composed of Hackworth and other close advisers from the previously established Informal Agenda Group, to implement the vision of a United Nations. Dumbarton Oaks Conference Prior to the Dumbarton Oaks conference, the U.S. State Dept. originated the American Planning Group for preparation. This group was divided into three sections and each section was responsible for a different topic that was to be addressed at Dumbarton Oaks. Hackworth headed the second group charged with studying arrangements for the peaceful settlements of international disputes and the development of a World Court. At the Dumbarton Oaks Conference, Hackworth chaired a special Legal Subcommittee that was established to deal with the issue of a World Court. The subcommittee used as a base the American draft statute that Hackworth's section had developed prior to the conference. The subcommittee first dealt with the technically complex issue of whether or not the present court should be continued or a new court established and also what the relationship should be of the new court with the new international organization. Hackworth championed the American's view that retaining as much of the existing court statutes as possible. However, the Soviets strongly opposed the continuing membership of certain neutral states in the World Court and favored a new tribunal. This dispute and others over the World Court were settled at the general U.N. Conference at San Francisco where Hackworth represented the U.S. on Committee IV, which was tasked with finalizing statutes for the International Court of Justice. International Court of Justice Hackworth was nominated by three former U.S. Secretaries of State for an initial six-year term on the Court and was subsequently elected to a full nine-year term in 1951. In 1955 he succeeded Sir Arnold McNair of Great Britain for a