The smartest mob guy has to come from Chicago. They by far have the fewest rats of any family and many more men who lived free lives conducting business than in a prison cell.
I say Albie Vena may in fact be the smartest boss who has ever walked the streets.
Rush, you named Vena. Now give us another 4 of who you rank as the smartest. Then list the 5, who in your view, were the dumbest, ok.
