commonly known as the Kefauver Hearings, chaired by Senator Estes Kefauver of Tennessee. Costello was convicted of contempt of the Senate and sentenced to eighteen months in prison. Kefauver concluded that New York politician Carmine DeSapio was assisting the activities of Costello, and that Costello had become influential in decisions made by the Tammany Hall political machine. DeSapio admitted to having met Costello several times, but insisted that "politics was never discussed". In 1952, the federal government began proceedings to strip Costello of his U.S. citizenship and he was indicted for evasion of $73,417 in income taxes between 1946 and 1949. He was sentenced to five years in prison and fined $20,000. In 1954, Costello appealed the conviction and was released on $50,000 bail; from 1952 to 1961, he was in and out of half a dozen federal and local prisons and jails, his confinement interrupted by periods when he was out on bail pending determination of appeals. The return of Genovese Costello ruled for twenty peaceful years, but his quiet reign ended when Genovese was extradited from Italy to New York. During his absence, Costello demoted Genovese from underboss to caporegime, leaving Genovese determined to take control of the family. Soon after his arrival in the U.S., Genovese was acquitted of the 1936 murder charge that had driven him into exile. Free of legal entanglements, he started plotting against Costello with the assistance of Mangano family underboss Carlo Gambino. On May 2, 1957, Luciano mobster Vincent "the Chin" Gigante shot Costello in the side of the head as Costello returned to his apartment. Gigante's aim proved errant, however, and Costello survived the attack with no more than a flesh wound. Costello claimed he could not identify his attacker; Gigante was later acquitted when prosecuted for the shooting. Months later, Anastasia, the boss of the Mangano family and a powerful ally of Costello's, was murdered by Gambino's gunmen at the Park Central Hotel in Manhattan. With Anastasia's death, Carlo Gambino seized control of the Mangano family. Fearing for his life and isolated after the shootings, Costello quietly retired and surrendered control of the Luciano family to Genovese. Having taken control of what was renamed the Genovese crime family in 1957, Genovese decided to organize a Mafia conference to legitimize his new position. Held at mobster Joseph "Joe the Barber" Barbara's estate in Apalachin, New York, the Apalachin meeting attracted over