Professor Theoharis became a consultant to the committee, which in 1975 and 1976 investigated the legality of intelligence operations by the FBI, CIA, and National Security Agency. He searched the archives of several presidential libraries, including those of Truman, Eisenhower and Lyndon B. Johnson, on classified documents that the FBI sent to presidents.
“They have access to FBI files, unrestricted access,” he told Ms Medsger and Ms Hamilton, referring to the Church Committee and its counterpart in the House, led by Rep. Otis Pike. , a Democrat from New York. “And that’s a different ball game.”
And it was also for Professor Theoharis. He deployed the FOIA, which had been reinforced by Congress in 1974, to probe sensitive “official and confidential” files of Hoover and his key associates, as well as those designated “Do Not File”, which were kept in the files. central FBI files, presumably safe. to be disclosed.
“That absurd ‘Do Not File’ file was one of the things Athan delved into,” Professor Gage said, “and he got a lot of information that way.”
Professor Theoharis has written numerous books on the FBI, including “The Boss: J. Edgar Hoover and the American Inquisition” (1988, with John Stuart Cox) and “From the Secret Files of J. Edgar Hoover” (1991) , who reprinted agency memorandums along with Professor Theoharis’ commentary.
Reviewing ‘The Boss’ in The New York Times, Herbert Mitgang wrote:’ Unlike other recent Hoover biographers, the authors make no apologies for the excesses of ‘The Boss’. They have the goods on him.
Professor Theoharis believed that the portrayal of Hoover as a homosexual transvestite that emerged in Anthony Summers’ 1993 book, “Official and Confidential: The Secret Life of J. Edgar Hoover”, was a distraction from the seriousness of the Hoover’s uncontrolled authority.