Question: 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?

full_context: Document 1: Trade Unions International of Transport Workers: The Trade Unions International of Transport Workers is a trade unions international of workers in the transport industry affiliated with the World Federation of Trade Unions. It was formerly known as the Trade Unions International of Transport, Port and Fishery Workers.
Document 2: 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. He was a close associate of longtime IBT President Jimmy Hoffa and associated with the Chicago Outfit. Dorfman was convicted on several felony counts, and was murdered in 1983.
Document 3: Amalgamated Clothing Workers of America: The Amalgamated Clothing Workers of America (ACWA) was a United States labor union known for its support for "social unionism" and progressive political causes. Led by Sidney Hillman for its first thirty years, it helped found the Congress of Industrial Organizations. It merged with the Textile Workers Union of America (TWUA) in 1976 to form the Amalgamated Clothing and Textile Workers Union (ACTWU), which merged with the International Ladies' Garment Workers' Union in 1995 to create the Union of Needletrades, Industrial and Textile Employees (UNITE). UNITE merged in 2004 with the Hotel Employees and Restaurant Employees Union (HERE) in 2004 to create a new union known as UNITE HERE. After a bitter internal dispute in 2009, the majority of the UNITE side of the union, along with some of the disgruntled HERE locals left UNITE HERE, and formed a new union named Workers United, Led by former UNITE president Bruce Raynor.
Document 4: UNITE HERE: UNITE HERE is a labor union in the United States and Canada with more than 265,000 active members The union's members work predominantly in the hotel, food service, laundry, warehouse, and casino gaming industries. The union was formed in 2004 by the merger of Union of Needletrades, Industrial, and Textile Employees (UNITE) and Hotel Employees and Restaurant Employees Union (HERE).
Document 5: Seafarers International Union of North America: The Seafarers International Union or SIU is an organization of 12 autonomous labor unions of mariners, fishermen and boatmen working aboard vessels flagged in the United States or Canada. Michael Sacco has been its president since 1988. The organization has an estimated 35,498 members and is the largest maritime labor organization in the United States. Organizers founded the union on October 14, 1938. The Seafarers International Union arose from a charter issued to the Sailors Union of the Pacific by the American Federation of Labor as a foil against loss of jobs to the Congress of Industrial Organizations (CIO) and its Communist Party-aligned faction.
Document 6: International Ladies' Garment Workers' Union: The International Ladies' Garment Workers' Union (ILGWU) was once one of the largest labor unions in the United States, one of the first U.S. unions to have a primarily female membership, and a key player in the labor history of the 1920s and 1930s. The union, generally referred to as the "ILGWU" or the "ILG," merged with the Amalgamated Clothing and Textile Workers Union in 1995 to form the Union of Needletrades, Industrial and Textile Employees (UNITE). UNITE merged with the Hotel Employees and Restaurant Employees Union (HERE) in 2004 to create a new union known as UNITE HERE. The two unions that formed UNITE in 1995 represented 250,000 workers between them, down from the ILGWU's peak membership of 450,000 in 1969.
Document 7: Los Angeles County Federation of Labor: The Los Angeles County Federation of Labor was started in 1885. Originally, the Los Angeles County Federation of Labor was split into five individual unions of bakers, cigar makers, printers, tailors, and carpenters. Now they represent over 300 unions, about 800,000 people, throughout Los Angeles County, making it the second largest in the country. “A survey published in December 2003 showed that the three largest unions in the Los Angeles County Federation of Labor were SEIU 434B (with seventy-four thousand homecare and nursing home workers), SEIU 399 with forty-five thousand health care and other employees, and the United Teachers of Los Angeles (with thirty thousand teachers from the American Federation and the National Education Association).” They have helped make Los Angeles a union city. Their mission is to “ promote a voice for workers through organizing themselves into unions, building strong coalitions of labor, community, faith, and responsible businesses, engaging in both organizing and political campaigns, electing pro-union and pro-worker candidates and advancing public policies that support workers, families and local communities.” They also encourage people to help make change by voting. The Los Angeles County Federation of labor is a major focal point for new American labor movement. Recently, the impressive progression of Los Angeles becoming a union city has become a stand out model for other non-union cities because of Los Angeles’ anti-union history. Los Angeles combines the economic development activism and the refined political work of the Los Angeles County Federation of Labor.
Document 8: Al Davis: Allen Davis (July 4, 1929 – October 8, 2011) was an American football coach and executive. He was the principal owner and general manager of the Oakland Raiders of the National Football League (NFL) for 39 years, from 1972 until his death in 2011. Prior to becoming the principal owner of the Raiders, he served as the team's head coach from 1963 to 1965 and part owner from 1966 to 1971, assuming both positions while the Raiders were part of the American Football League (AFL). He also served as the commissioner of the AFL in 1966.
Document 9: Morris Shenker: Morris A. Shenker (January 10, 1907 – August 9, 1989) was an American lawyer best known for his connections to labor leader Jimmy Hoffa and Teamster funding of Las Vegas in the 1960s.
Document 10: Frank Schweihs: Francis John Schweihs (February 7, 1932 – July 23, 2008), aka "Frank the German", was an American gangster, who worked for The Outfit, the organized crime family of Chicago. At the time of his death, federal prosecutors planned to indict him for numerous crimes, including murder. It is believed he had participated in, or had knowledge of, many murders going back decades, including brothers Anthony "Tony the Ant" Spilotro and Michael Spilotro, Allen Dorfman of the Teamsters Union, a disgraced Chicago cop, Outfit associate and informant Dick Cain, Outfit boss Salvatore "Sam," "Mooney" Giancana, loanshark Sam "Mad Sam" DeStefano, Outfit hitman Charles "Chuckie" Nicoletti and others.
Document 11: International Association of Machinists and Aerospace Workers: International Association of Machinists and Aerospace Workers
Document 12: 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 several local and regional locals of teamsters, the union now represents a diverse membership of blue-collar and professional workers in both the public and private sectors. The union had approximately 1.3 million members in 2013. Formerly known as the International Brotherhood of Teamsters, Chauffeurs, Warehousemen and Helpers of America, the IBT is a member of the Change to Win Federation and Canadian Labour Congress.
Document 13: Joseph Glimco: Joseph Paul Glimco (January 14, 1909 – April 28, 1991) was an Italian American labor leader and well-known organized crime figure based in Chicago, Illinois. He was considered "Chicago's top labor racketeer" in the 1950s. One high-ranking Chicago Teamsters leader noted in 1954, "He is the mob. When he opens his mouth, it's the syndicate talking." Glimco was active in the International Brotherhood of Teamsters (IBT) and a close associate of Teamsters president Jimmy Hoffa. He was a capo in the Chicago Outfit, an organized crime syndicate, and oversaw the syndicate's labor racketeering efforts. He worked closely with Tony "Joe Batters" Accardo, who led the Chicago Outfit from 1943 to 1957, and Sam "Momo" Giancana, who led the syndicate from 1957 to 1966. A United States Senate committee once claimed that Glimco ran "the nation's most corrupt union."
Document 14: Anthony Giacalone: Anthony Joseph "Tony" Giacalone, also known as Tony Jack (January 9, 1919 – February 23, 2001) was an American organized crime figure in Detroit, serving as a capo in the Detroit Partnership. He came to public notice during the 1970s during investigations into the disappearance of Jimmy Hoffa, as he was one of two Mafia members – the other being Anthony Provenzano – that Hoffa was to meet the day he disappeared. Giacalone was later jailed for ten years in 1976 for income tax fraud at the Federal Correctional Institution in Oxford, Wisconsin.
Document 15: Johnny Torrio: John Torrio (January 20, 1882 – April 16, 1957) also known as "Papa Johnny", "The Fox", and "The Immune", was an Italian-American mobster who helped build a criminal empire, the Chicago Outfit, in the 1920s; it was later inherited by his protégé, Al Capone. He also put forth the idea of the National Crime Syndicate in the 1930s and later became an unofficial adviser to the Genovese crime family.
ground_truth: International Brotherhood of Teamsters