Oh, yes. They went back quite a ways, these two did. Both crossed paths with some who did their best for All the People, as well.http://www.spartacus.schoolnet.co.uk/USAhoffa.htm
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Hoffa was popular with his members and in 1960 was re-elected as president of the Teamsters Union. A long-term supporter of the Republican Party, Hoffa was a generous supplier of funds to Richard Nixon in his presidential struggle with John F. Kennedy. During the campaign, Robert Kennedy sent Hoffa a copy of his book, The Enemy Within. Kennedy wrote inside: "To Jimmy. I'm sending you this book so you won't have to use union funds to buy one. Bobby."
After Kennedy's election victory in 1960 he appointed Robert Kennedy as his attorney general. Once in office, Kennedy resumed his investigations into Hoffa's activities. Hoffa was eventually charged with taking money from the union's $300 Pension Fund. J. Edgar Hoover, a long-term opponent of the Kennedys, passed FBI files on the attorney general to Roy Cohn, who in turn gave them to Hoffa. However, Hoffa, who disapproved of the Kennedy's adulterous behaviour, declined to use this material against his prosecutors.
A former official of the union, E. G. Partin, was in prison facing charges of kidnapping, murder, robbery and rape, agreed to do a deal with the authorities and provide evidence against Hoffa. At the first trial at Nashville in October, 1962, the hung jury voted 7-5 for acquittal. The judge, believing that Hoffa's team were guilty of jury tampering, called a mistrial. At the second trial at Chattanooga in January, 1964, Hoffa was found guilty and sentenced to eight years in prison.
In December, 1971, President Richard Nixon ordered Hoffa's release. Later, FBI records revealed that Nixon had received illegal campaign donations from the Teamsters Union in exchange for a presidential pardon.
After his release Hoffa travelled the country campaigning for prison reform. He also attempted to return as leader of the Teamsters Union. On 30th July, 1975, James Hoffa disappeared when travelling to a meeting with the Detroit gangster, Anthony Giacalone. In 1982 Hoffa was legally declared "presumed dead".