On pages 115 and 116, in his book "Inner Circles - How America Changed the World - A Memoir," Alexander M. Haig, Jr. writes:
For reasons of my own, I think that President Johnson's suspicions in regard to Castro's role were amply justified. Very soon after President Kennedy's death, an intelligence report crossed my desk. In circumstantial detail, it stated that Oswald had been seen in Havana in the company of Cuban intelligence officers several days before the events in Dallas, and that he had traveled there by way of Mexico City, where, as the Warren Commission later established, he had been received at the Soviet embassy. The detail - locale, precise notations of time, and more - was very persuasive. I was aware that it woild not have reached so high a level if others had not judged it plausible enough to merit the consideration of high officials. As I read the report, I felt a sense of physical shock, a rising of the hair on the back of my neck. I walked it over to my superiors, some of whom had attended that Sunday-morning meeting with President Johnson. Reading it caused their faces to go ashen.
"Al," said one of them, "you will forget, as from this moment, that you ever read this piece of paper, or that it ever existed." The report was destroyed. Notwithstanding the order I was given, I have found it impossible, over the course of the last thirty years, to forget the report as I was ordered to do or to banish from my mind the many unanswered - and now, perhaps, unanswerable - questions that it raised.
Why would Al Haig write this if he had not seen such a report? To sell his book? I don't think so, his section on the JFK assassination is relatively short compared to the rest of his story.
I have looked at the possibilities of LHO traveling to Cuba during the "several days before the events in Dallas," and LHO's whereabouts appear to be in the Dallas area with the exception of Sunday 11/17/63. LHO didn't call Marina that day, and so she asked Ruth Paine to call the number of LHO's rooming house. And of course, since LHO had used a fake name at the rooming house, they were unable to reach LHO. When questioned by Marina later, LHO reportedly told her he was at the rooming house watching television. However, I believe that it might be possible that LHO lied to Marina and wasn't really at the rooming house, but in Havana, Cuba that day.
I don't have any idea why the Cubans would have wanted LHO to be in Havana. In fact I think that, if they were involved in an assassination plot, that they would want to avoid having him there. And therefore, the report that Al Haig said he saw would appear to me to most likely be a false sighting of LHO, and Haig's superiors might have just wanted to avoid having to explain it, so they destroyed it (similar to the destruction of the LHO note that the Dallas FBI destroyed).
I would like to know if anyone has seen any evidence that the report actually existed. If anyone else has ever said that they saw such a report, etc. Also, if there is any evidence (other than what he told Marina) that LHO actually was at the rooming house on 11/17/63.