The International Brotherhood of Teamsters (IBT), also known as the Teamsters Union, 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-collar and professional workers in both the public and private sectors. The union has approximately 1.3 million members as of 2015. Formerly known as the International Brotherhood of Teamsters, Chauffeurs, Warehousemen and Helpers of America, the IBT is a member of the Strategic Organizing Center and Canadian Labour Congress. History Early history The American Federation of Labor (AFL) had helped form local unions of teamsters since 1887. In November 1898, the AFL organized the Team Drivers' International Union (TDIU). In 1901, a group of teamsters in Chicago, Illinois, broke from the TDIU and formed the Teamsters National Union. Unlike the TDIU, which permitted large employers to be members, the new Teamsters National Union permitted only employees, teamster helpers, and owner-operators owning only a single team to join, and advocated higher wages and shorter hours more aggressively than the TDIU. Claiming more than 28,000 members in 47 locals, its president, Albert Young, applied for membership in the AFL. The AFL asked the TDIU to merge with Young's union to form a new, AFL-affiliated union and the two groups did so in 1903, forming the International Brotherhood of Teamsters (IBT), and electing Cornelius Shea as the new union's first president. The election process proved tumultuous. Shea effectively controlled the convention because the Chicago locals—representing nearly half the IBT's membership—supported his candidacy en bloc. Shea was opposed by John Sheridan, president of the Ice Drivers' Union of Chicago. Sheridan and George Innes, president of the TDIU, accused Shea of embezzlement in an attempt to prevent his election. Shea won the election on August 8, 1903, by a vote of 605 to 480. The new grouping elected Edward L. Turley of Chicago as secretary-treasurer and Albert Young as general organizer. The union, like most unions within the American Federation of Labor (AFL) at the time, had a largely decentralized structure, with a number of local unions that governed themselves autonomously and tended to look only after their own interests in the geographical jurisdiction in which they operated. The teamsters were vitally important to the labor movement, for a strike or sympathy strike by the teamsters could paralyze