Case studiesHistoryInternational Brotherhood of Teamsters, Chauffeurs, Warehousemen and Helpers of AmericaInternational Brotherhood of Teamsters, Chauffeurs, Warehousemen and Helpers of America. Minneapolis. Local 544Labor unions and communismLabor unionsPolitical activityPolitics and governmentInternational Brotherhood of Teamsters, Chauffeurs, Warehousemen, and Helpers of America. Minneapolis. Local 544Farmer-Labor Party (Minn.)