Jimmy Hoffa a result of Hoffa's work with other union leaders to consolidate local union trucker groups into regional sections, and then into a national body — work that Hoffa ultimately completed over a period of two decades — membership grew to 170,000 members by 1936. Three years later, there were 420,000. The number grew steadily during World War II and through the post-war boom to top a million members by 1951. The Teamsters organized truck drivers and warehousemen, first throughout the Midwest, then nationwide. Hoffa played a major role in the union's skillful use of "quickie strikes", secondary boycotts, and other
GCHQ trade union ban in Cheltenham. Following the expression of concern by US spymasters, trade unionism was banned at GCHQ (which monitors radio communications around the world as a part of an Anglo-American intelligence agreement). The US security agency used its diplomatic influence to secure the union ban. Margaret Thatcher claimed industrial action at the base, particularly during the 1981 civil service pay strike, had undermined the nation's security and justified the ban. On 25 January 1984, during the Second Thatcher ministry, Foreign Secretary Geoffrey Howe announced in the House of Commons that trade unionism was no longer acceptable at GCHQ. The TUC, CCSU,