Jimmy Hoffa IBT would expand as the union itself grew. Hoffa worked to defend the Teamsters unions from raids by other unions, including the CIO, and extended the Teamsters' influence in the Midwestern states, from the late 1930s to the late 1940s. Although he never actually worked as a truck driver, he became president of Local 299 in December 1946. He then rose to lead the combined group of Detroit-area locals shortly afterwards, and advanced to become head of the Michigan Teamsters groups sometime later. During this time, Hoffa obtained a deferment from military service in World War II by successfully making
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