"In a 1992 interview, Edward Haggerty, who was the judge at the Clay Shaw trial, stated: "I believe he [Shaw] was lying to the jury. Of course, the jury probably believed him. But I think Shaw put a good con job on the jury."
In On the Trail of the Assassins, Garrison states that Shaw had an "...extensive international role as an employee of the CIA." In the September 1969 issue of Penthouse, Shaw denied that he had had any connection with the CIA.
During a 1979 libel suit involving the book Coup D'Etat In America, Richard Helms, former director of the CIA, testified under oath that Shaw had been a part-time contact of the Domestic Contact Service of the CIA, where Shaw volunteered information from his travels abroad, mostly to Latin America. Like Shaw, 150,000 Americans (businessmen, and journalists, etc.) had provided such information to the DCS by the mid-1970s. In February 2003, the CIA released documents pertaining to an earlier inquiry from the Assassination Records Review Board about QKENCHANT, a CIA project used to provide security approvals on non-CIA personnel, that indicated Shaw had obtained a "five Agency" clearance in March 1949."