The Temporary National Economic Committee (TNEC) was established by a joint resolution of the United States Congress on June 16, 1938 and operated until its defunding on April 3, 1941. The TNEC's function was to study the monopoly powers and to report to Congress with its findings.One of the many firms brought in for questioning was Brown Brothers Harriman & Co. who later employed Prescott Bush, grandfather of U.S. President George W.