What was the intent or purpose of Congress in passing the 1932 Norris-La Guardia Act

What was the intent or purpose of Congress in passing the 1932 Norris-La Guardia Act

What was the intent or purpose of Congress in passing a) the 1932 Norris-La Guardia Act; b) the 1935 National Labor Relations (Wagner) Act; and c) the 1947 Labor Management Relations (Taft-Hartley) Act?