Pure Free traitor propaganda.
Smoot-Hawley had a minimal effect on the depression. China and Mexico run HUGE trade deficits with the USA. So much BS so few shovels.
Better tell that to Ferris Bueller's teacher.
The Federal Reserves disastrous monetary policy caused the Great Depression. The Feds policies resulted in a 1/3 contraction of the money supply between 1929-32.
Second FDR and his Keynesian/Marxist cabal exacerbated and prolonged the great depression.
The Great Depression ended with Roosevelts' death.
If FDR followed President Harding's policies the depression would have been over in about 18 months. BTW, marxist liberals rate Harding near the bottom of Presidential rankings (because he took a knife to government spending to cure the Greater Depression he handled.)