Even though the complaints from union members about the no-strike pledge became louder and more bitter, the CIO did not abandon it. The Mine Workers, by contrast, who did not belong to either the AFL or the CIO for much of the war, threatened numerous strikes including a successful twelve-day strike in 1943. The strikes and threats made mine leader John L. Lewis a much-hated man and led to legislation hostile to unions.Melvyn Dubofsky and Warren Van Tine, John L. Lewis: A Biography (1977) pp. 415-44
