Found this while looking up information on some of the old timers, or hat trick guys lol.

Robert Crapanzano was apparently in an IBT local and was actually forced to resign his post for bringing "reproach upon the International Brotherhood of Teamsters" and by violating his "oath" as an officer in Local 27 by being a "member of La Cosa Nostra"!

http://irbcases.wrlc.org/bitstream/handle/38989/c01b5mmdv/gwu_ibt_irb_case_00099_ia.pdf?sequence=1