What is this labor union in North America that had over a million members in 2013 and also worked with the insurance agency owner, and consultant Allen Dorfman?
Allen Dorfman: Allen Dorfman (January 6, 1923, Detroit, Michigan – January 20, 1983, Lincolnwood, Illinois) was an insurance agency owner, and a consultant to the International Brotherhood of Teamsters (IBT) Central States Pension Fund. International Brotherhood of Teamsters:  The union had approximately 1.3 million members in 2013.
i don't know