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Howat combined with left wing union organizer Powers Hapgood in attempting to organize left wing delegates associated with the Communist Party's trade union mass organization, the Trade Union Educational League (TUEL) as well as anti-Lewis conservatives in an effort to depose Lewis.
The organisation served during its initial years as the "above-ground" arm of the underground League of the Just and later as a mass organisation of the Communist League.
After organizing demonstrations at Fort Sill, Oklahoma in support of a soldier being tried for possessing anti-war literature, they founded the American Servicemens Union, intended to be a mass organization of American soldiers.
American Negro Labor Congress (1925-1930), a mass organization of the Communist Party, USA