The Tariff Act of 1930 (codified at 19 U.S.C. ch. 4), otherwise known as the Smoot–Hawley Tariff or Hawley–Smoot Tariff, was an act sponsored by Senator Reed Smoot and Representative Willis C. Hawley and signed into law on June 17, 1930, that raised U.S. tariffs on over 20,000 imported goods to record levels.
The Great Depression was caused by a financial crises and a bubble stock market. Trade had NOTHING to do with it. To say that Smoot-Hawley caused the GD on national TV is a disgrace.