Jimmy Hoffa Agreement. He played a major role in the growth and development of the union, which eventually became the largest (by membership) in the United States with over 2.3 million members at its peak, during his terms as its leader. Hoffa became involved with organized crime from the early years of his Teamsters work, and this connection continued until his disappearance in 1975. He was convicted of jury tampering, attempted bribery and fraud in 1964, in two separate trials. He was imprisoned in 1967 and sentenced to 13 years. In mid-1971, he resigned as president of the union as part of
Jimmy Hoffa he was told that Hoffa was cremated after the murder. Sheeran also confessed to reporters that he murdered Hoffa. Blood found in the Detroit house where Sheeran claimed the murder happened was determined not to be Hoffa's. On June 16, 2006, the "Detroit Free Press" published in its entirety the so-called "Hoffex Memo", a 56-page report the FBI prepared for a January 1976 briefing on the case at FBI Headquarters in Washington. Although not claiming conclusively to establish the specifics of his disappearance, the memo records a belief that Hoffa was murdered at the behest of organized crime figures who