if he died of blood loss from such a small weapon, then why would not someone stop the blood loss. even someone trained in simple first aid could have saved him, yet there is no indication that any one attepted to do so.
your assuming that the goverment would risk him showing up years later to name names. it would be so much easier to make sure he never talked at all. that weapon would easily pass through cloths and perhaps something else never shown, made sure he did not talk after being hit. no there was no reason to believe that he was allowed to live, which would have risked everyone else connected to him. if they were willing to kill the president, why would they stop short of killing the guy who was to take the fall. since jack ruby was dying, it would be easy to make sure he did not talk in the time he had left. How do you know he actually had terminal cancer and it was not used as an excuse to keep him isolated and then killed.
