History of union busting in the United States Dave Beck, President of the Teamster's Union in that era, worked closely with Nate Shefferman on many deals not the least of which may have been his influence at Sears to discourage employees from joining the AFL Retail Clerks union which was trying to raid the Teamsters membership to join them instead. An indicator of the close relationship between the Teamster's President David Beck and Shefferman (excerpted from the article): "Beck dispatched Shefferman to Jim Hoffa last year (1956) to offer Hoffa the union's presidency if Hoffa would first help re-elect Beck and then wait 6 months for Beck to
Jimmy Hoffa assaulted. The threats from the mafia that they would get rid of Hoffa were taken very seriously; Hoffa's son is quoted as saying "Dad was pushing so hard to get back in office, I was increasingly afraid that the mob would do something about it." There had been three visits in a short time frame to Hoffa's home at Lake Orion and one trip to the Guardian Building law offices by Anthony Giacalone, an alleged kingpin in the Detroit Mafia, and his younger brother, Vito. Friendly with Provenzano and believed to be related to him, their avowed purpose in coming