The "Warren Commission" report pointed to two discrepancies which are now answered.....1.) Who were the three persons in Dealy Plaza with false Secret Service ID's, and why did they have them?, and 2.) Why did the CIA represent with false photos that Oswald had made a trip to Mexico city when he had not?
FALSE SECRET SERVICE IDENTIFICATIONS
The "Warren Commission" reported that a Dallas police officer ran up the "grassy knoll" because he heard and saw a shot from there when he encountered someone in a suit, pointed his service weapon at him, and then that person produced a SS ID [resulting in his release from detention]. Dallas police also stopped two other men leaving the front door of the Book Depository but these two men were also not detained because they showed SS IDs.
The Secret Service reported to the "Warren Commission" that they had no such persons on the ground in the Plaza, and that all Secret Service personnel were in the President's motorcade.
The unit in the CIA which produced the false Secret Service IDs and issued them to CIA agents is now known. It was the Special Unit operated by Sidney Gottleib which existed only for Executive Action.
FALSE OSWALD PHOTO GIVEN TO "WARREN COMMISSION" BY CIA
The "Warren Commission" was provided with a story that Oswald was photographed and recorded visiting the Soviet embassy in Mexico City shortly before the assassination. CIA provided a grainy surveillance photo of an overweight man in his fourties and claimed it was Oswald. CIA also claimed their wiretap recordings of Oswald's phone conversations to the Soviet embassy had been destroyed.
When the Commission was formed, it's steering member, former Director of CIA Allen Dulles, informed the Commission members [including Warren, who was rarely there] that CIA must maintain influence over the investigation because "Oswald visited KGB assassination director Korchikov at the Soviet embassy in Mexico and if this gets out the American public will demand a war with the USSR and Cuba."
However J. Edgar Hoover is now known, through now released documents, to have known the Oswald photo and recording were both false, and therefore Oswald's trip to Mexico and visit with the KGB was a fabrication.
Additionally, in the 1970s Select Committee on Assassinations a true copy of the tape recording of Oswald was produced...it wasn't the voice of Oswald.
Regretably it's now established that a unit within CIA contrived the story and "evidence" of the Oswald trip to Mexico City BEFORE the assassination.
The same unit provided false Secret Service Identification to persons in Dealy Plaza at the points from which shots were fired.