Assuming Marcello actually did have the power and the balls to kill JFK and awterwards keep it one of the best kept secrets in the history of the mafia, am i really supposed to believe that he was stupid enough to admit it to a low level bankrobber he met in prison? Doesn't add up.
Im with you on that as well, but it was in some FBI report, I am guessing some members of the government know exactly what happened but I am pretty sure they are all dead at this point...will make a great movie to discuss if deniro and dicaprio are in it