My personal opinion is that one of the biggest mistakes that U.S. government did at the time, was the deportation of mobsters in their home countries, something which made quite large contribution to the narcotics trade. Some of these fellas were few of the biggest criminal minds such as Charles Luciano, Frank Coppola, Serafino Mancuso or Chicago’s Dominic Roberto who in turn was probably the first deported Capone member since the early 1930s and his crew was also deeply involved in the trade during the following decades.