 After the assassination of John F. Kennedy, he authored the Foreword to the Warren Commission report on the investigation of JFK's murder, which had been researched by a former Department of Justice prosecutor who had recently joined the firm, future boxing promoter Bob Arum.Nizer was portrayed by George C. Scott in the 1975 CBS made-for-television film, "Fear on Trial", co-starring William Devane as the blacklisted radio personality John Henry Faulk.Both on stage and on television, Van Heflin portrayed Robert Sloane, a fictionalized version of Nizer, in the play "A Case of Libel", which dramatized the Quentin Reynolds - Westbrook Pegler trial.