were Communists in the Defense Department, led to the Army–McCarthy hearings of 1954, during which the Army charged Cohn and McCarthy with using improper pressure on Schine's behalf, and McCarthy and Cohn countercharged that the Army was holding Schine "hostage" in an attempt to squelch McCarthy's investigations into Communists in the Army. The Army-McCarthy hearings ultimately contributed to McCarthy's censure by the Senate later that year. After resigning from McCarthy's staff, Cohn returned to New York and entered private practice as an attorney. Legal career in New York After leaving McCarthy, Cohn had a 30-year career as an attorney in New York City. His clients included Donald Trump; New York Yankees baseball club owner George Steinbrenner; Aristotle Onassis; Mafia figures Tony Salerno, Carmine Galante, John Gotti and Mario Gigante, Studio 54 owners Steve Rubell and Ian Schrager (who hosted his birthday there one year – the invitation appearing like a subpoena); the Roman Catholic Archdiocese of New York; Texas financier and philanthropist Shearn Moody, Jr.; and business owner Richard Dupont. Dupont, then 48, was convicted of aggravated harassment and attempted grand larceny for his extreme attempts at coercing further representation by Cohn for a bogus claim to property ownership in a case against the actual owner of 644 Greenwich Street, Manhattan, where Dupont had operated Big Gym, and from where he had been evicted in January 1979. Throughout Cohn's career there were accusations of theft, obstruction, extortion, tax evasion, bribery, blackmail, fraud, perjury, and witness tampering. Cohn was known for his active social life, charitable giving, and combative and loyal personality. His combative personality would often come out in the threatening letters he would send to those who dared to sue his clients. Political activities In the early 1960s Cohn became a board member of the Western Goals Foundation. Although he was registered as a Democrat, Cohn supported most of the Republican presidents of his time and Republicans in major offices across New York. He maintained close ties in conservative political circles, serving as an informal advisor to Richard Nixon and Ronald Reagan. Cohn was also linked to and worked with Democrats such as Ed Koch, Meade Esposito, and John Moran Bailey. According to the documentary Where's my Roy Cohn?, his father Albert Cohn introduced him to Franklin D. Roosevelt. While on the Reagan campaign he would befriend Roger Stone. Cohn's other clients included retired Harvard Law School professor Alan