James Ridle "Jimmy" Hoffa (February 14, 1913 - disappeared July 30, 1975, exact date of death unknown) was an American labor leader and criminal convict (pardoned). As the president of the International Brotherhood of Teamsters from the mid-1950s to the mid-1960s, Hoffa wielded considerable influence. After he was convicted of attempted bribery of a grand juror, he served nearly a decade in prison. He is also well-known in popular culture for the mysterious circumstances surrounding his unexplained disappearance and presumed death. His son James P. Hoffa is the current president of the Teamsters.