Jimmy Hoffa influence and control after 1967, to Hoffa's displeasure. Fitzsimmons also decentralized power somewhat within the IBT's administration structure, forgoing much of the control Hoffa took advantage of as union president. On December 23, 1971, less than five years into his 13-year sentence, Hoffa was released from prison when President Richard Nixon commuted his sentence to time served. Following his release, Hoffa was awarded a Teamsters' pension of $1.7 million, delivered in a one-time lump sum payment. This type of pension settlement had not occurred before with the Teamsters. The IBT then endorsed President Nixon, a Republican, in his presidential re-election
Jimmy Hoffa found when Giants Stadium was demolished in 2010. In the book, "I Heard You Paint Houses: Frank "The Irishman" Sheeran and the Closing of the Case on Jimmy Hoffa" (2004), author Charles Brandt claims that Frank Sheeran, a professional killer for the mob and longtime friend of Hoffa's, confessed to assassinating him. According to Brandt, O'Brien drove Sheeran, Hoffa, and fellow mobster Sal Briguglio to a house in Detroit. He claimed that while O'Brien and Briguglio drove off, Sheeran and Hoffa went into the house, where Sheeran claims that he shot Hoffa twice behind the right ear. Sheeran says that