Context for non north americans like me, who looked at this confusedly lol: https://en.wikipedia.org/wiki/International_Brotherhood_of_Teamsters
The International Brotherhood of Teamsters (IBT) is a labor union in the United States and Canada. Formed in 1903 by the merger of the Team Drivers International Union and the Teamsters National Union, the union now represents a diverse membership of blue- and white-collar workers in both the public and private sectors, totalling about 1.3 million members in 2015. The union was formerly called the International Brotherhood of Teamsters, Chauffeurs, Warehousemen and Helpers of America.
Personally i'm proud of being called a liberal by a welfare fascist - must mean i'm doing something right, lol.