Tropicana Casino & Resort Atlantic City did not speak English, claimed Doyle's wife was a fraud, and ended his friendship with Conan Doyle. In 1929, the Ambassador was the site of the infamous Atlantic City Conference, in which a number of organized crime bosses, including Al Capone, Meyer Lansky and Lucky Luciano, negotiated their territorial rights after a wave of violence. In 1931, as Philadelphia gangster Mickey Duffy slept in the hotel, he was shot and killed by assailants who were never caught. The incident was dramatized in the series "Boardwalk Empire", with a character called Mieczyslaw "Mickey Doyle" Kuzik. The hotel eventually closed in the
Meyer Lansky for a decade. During a stay at the Waldorf-Astoria Hotel in New York in the late 1940s, it was mutually agreed upon that, in exchange for kickbacks, Batista would offer Lansky and the Mafia control of Havana's racetracks and casinos. Batista would open Havana to large scale gambling, and his government would match, dollar for dollar, any hotel investment over $1 million, which would include a casino license. Lansky would place himself at the center of Cuba's gambling operations. He immediately called on his associates to hold a summit in Havana. The Havana Conference was held on December 22, 1946,