 According to conference rules, the Jewish delegates could not vote on Cosa Nostra rules or policies; however, the Jewish crime bosses were allowed input on any joint business ventures, such as the Flamingo Hotel.Luciano opened the Havana Conference by discussing a topic that would greatly affect his authority within the American Mafia; the position of "capo di tutti capi" or "boss of all bosses".The last official boss of all bosses had been Salvatore Maranzano, who was murdered in September 1931.