It also involved, to a lesser extent, other ethnic criminal organizations such as the Irish Mob and African-American crime groups.
According to writers on organized crime, the Syndicate was an idea of Johnny "Fox" Torrio,[1] and was founded or established at a May 1929 conference in Atlantic City.
It was attended by leading underworld figures throughout the United States, including Torrio, Charles "Lucky" Luciano, Al "Big Al" Capone, Benjamin "Bugsy" Siegel, Frank "Prime Minister" Costello, Meyer "Little Man" Lansky, Joe "Joey A" Adonis, Dutch Schultz, Abner "Longie" Zwillman, Louis "Lepke" Buchalter, Gambino crime family head Vincent Mangano, Atlantic City Crime Syndicate boss Nucky Johnson, gambler Frank Erickson, Frank Scalice, and Albert "Mad Hatter" Anastasia.
One was the Jewish Brownsville Boys headed by Abe "Kid Twist" Reles, who reported to Lepke Buchalter and Jacob "Gurrah" Shapiro.
In his biography of Meyer Lansky, Little Man (1991), journalist Robert Lacey argued that no National Crime Syndicate ever existed.