David Weintraub worked in the United States Department of State and headed a mid-1930s New Deal project that hired a number of secret Communist Party of the United States (CPUSA) members. Whittaker Chambers was one. Weintraub was head of the Office of Foreign Relief and Rehabilitation Operations. He joined the professional staff of the United Nations Relief and Rehabilitation Administration (UNRRA) and United Nations Division of Economic Stability and Development where he was Irving Kaplan's supervisor after World War II.
Weintraub used his position to recommend Harry Magdoff and George Perazich who also were Soviet spies for employment within the government. He was a key figure in the 1952 Senate investigations of activities of US Citizens employed by the United Nations. As the Senate committee stated in its report Interlocking Subversion in Government Departments: "David Weintraub occupied a unique position in setting up the structure of Communist penetration of Government agencies by individuals who have been identified by witnesses as underground agents of the Communist party." In 1954, the United States Senate Internal Security Subcommittee (SISS) complained that the division he headed was hiring and providing United Nations cover for Soviet-bloc spies, and he resigned.
Weintraub was a member of the “Sound” and “Myrna” Group of Soviet spies.
- Interlocking Subversion in Government Departments, SISS report (July 30, 1953).
- Activities of U.S. Citizens Employed by the UN, hearings before the Senate Committee on the Judiciary (1952).
- Alexander Vassiliev's Notes on Anatoly Gorsky's December 1948 Memo on Compromised American Sources and Networks.