My informants say he later came to North America. The significance to me about this released FBI document is how important issues like this are kept hidden from the people by our govt. What else did they know?? Even if this document doesn’t “prove” he was in Argentina, it does show that our government helped cover up the leads, the clues, the information about what happened to him, so that all we were left with was the bogus stuff the Soviets gave us. And their story was full of holes.