Roy Marcus Cohn ( ; February 20, 1927 – August 2, 1986) was an American lawyer and prosecutor. He first gained fame as a prosecutor of Julius and Ethel Rosenberg in their trials (1952–53) and as Senator Joseph McCarthy's chief counsel during the Army–McCarthy hearings in 1954. Cohn had been assisting McCarthy's investigations of suspected communists. In the 1970s and during the 1980s, he became a prominent legal and political fixer in New York City. He represented and mentored Donald Trump during Trump's early business career. Wikipedia
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