Looks like the globalist free traitors at the Cato Institute are trying to reinvigorate their convoluted, revisionist and totally discredited theories regarding the Smoot-Hawley tariff.
Smoot-Hawley wasn't enacted until 1930, AFTER the market crash of '29.
Furthermore, trade only amounted to 6% of GNP at the time and declined to 2% of GNP by 1932. The bulk of this decline is directly attributable to the 31% decline in GNP and 25% unemployment rate precipitated by the market crash. The effects of Smoot-Hawley, which only applied to 1/3 of imports, were negligible in comparison.
Of course, as is characteristic of revisionism, the dimbulbs at the Cato Institute prefer to distort facts to suit their own political agenda.