The Taft - Hartley Act was a major revision of the National Labor Relations Act of 1935 ( the Wagner Act ) .
The Taft - Hartley Act represented the first major revision of a New Deal act passed by a post-war Congress .
The Taft - Hartley Act was a major revision of the National Labor Relations Act of 1935 ( the Wagner Act ) and represented the first major revision of a New Deal act passed by a post-war Congress .