Tags: Trade Union.
The Congress of Industrial Organizations (CIO) proposed by John L. Lewis in 1928 was a federation of unions that organized workers in industrial unions in the United States and Canada from 1935 to 1955. The Taft-Hartley Act of 1947 required union leaders to swear that they were not Communists. Many CIO leaders refused to obey that requirement later found unconstitutional. The CIO merged with the American Federation of Labor to form the AFL-CIO in 1955.The CIO supported Franklin D.
