SMG--
You ask fair questions. It would take a book to answer your questions, but I will throw up some observations.
1. KGB and G2 records have not been examined, except as allowed by Russian and Cubans authorities. Both agencies regard the JFKA as a propaganda event, and both answer to autocratic governments. Truth be told, we see a black box when we look at the KGB and G2. We don't know what we don't know.
2. The Katzenbach memo.
3. LBJ's concerns, legitimate or otherwise, about WWIII being triggered should LHO be linked to KGB or G2.
4. Specter fashioned the SBT not to answer to wound patterns on JFK and Gov. JBC, but as the only even plausible explanation, if a single shooter was a premise. Specter worked backward, assuming a single shooter. He said so.
5. You correctly note the WC had to rely on FBI and CIA investigators. But my understanding is Hoover decided LHO had acted alone, and the CIA may have been trying to cover up how riddled it was with KGB'ers (Victor Marchetti's suspicion). Bruce Solie did not want an investigation into the CIA.
6. The WC may not have decided to totally hand over investigations to the FBI and CIA, but it happened by default. Of course, at the time, it made sense. After all, the FBI was investigative agency, and the WC mostly lawyers. But the FBI-investigative agency had roughly settled on LHO as LN.
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I agree the HSCA pursued an roughly independent investigation (albeit leads were growing cold), though it should be noted Robert Blakey, a Mob-hunter and author of the RICO act, was big on the US Mafia having perped the JFKA, and even co-authored a book to that effect. I can't say I've read every document produced by the HSCA, but they did not seem to hunting LHO's foreign connections---although the HSCA did conclude there had been a JFKA conspiracy.
Worth noting: The HSCA did not produce anything to suggest CIA'ers were involved in the JFKA. If I recollect correctly, they even absolved US agencies of involvement.
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I think Gus Russo's work is interesting. I stand by my sentiments that the CIA has been looked by the JFKA research community in minute detail, but the community still offers only speculation as to CIA'er involvement in the JFKA. Bill Harvey, etc. And? What? Then they fashion the MIC-globalist capitalists wanted perma-war, blah blah, blah argument.
Alpha 66 is an interesting angle--I think overlooked as the JFKA research community wants a huge conspiracy, not a small one.
Russo's work more interesting, in part as far less is known about the KGB and G2. LHO appears to have been having smarmy connections to G2'ers, including in Mexico City (the ambassador there thought there was more to the LHO-G2 story than got out).
Well, that is what I think.
