In July 1945, FBI director J. Edgar Hoover instructed his agents to begin gathering information on CPUSA members to support an analysis of the Party's subversive goals, leading to a 1,850-page report published in 1946 which outlined a case for prosecution.[15] As the Cold War continued to intensify in 1947, Congress held a hearing at which the Hollywood Ten refused to testify about alleged involvement with the CPUSA, leading to their convictions for contempt of Congress in early 1948.[16] The same year, Hoover instructed the Department of Justice to bring charges against the CPUSA leaders with the intention of rendering the Party ineffective.[17] John McGohey, a federal prosecutor from the Southern District of New York, was given the lead role in prosecuting the case and charged twelve leaders of the CPUSA with violations of the Smith Act.