I challenge you to go look at trade data from that era and show me just how the United States was exporting or importing in any meaningful way whatsoever. It wasn't. The Great Depression absolutely was not caused by tariffs.
Liberals are Free Traders in the way that Bruce Jenner is a female. Liberals use the term prolifically but what they call ‘free trade’ is more akin to what the high school history books of 70 years ago, back when schools taught history, called Mercantilism. NAFTA and the Pacific Trade Agreement are NOT free trade. They are managed trade complete with government and quasi government councils and agencies to carefully manage and control every aspect of trade to benefit certain corporations and conglomerates and, of course, politicians. Calling a cat a coyote does not make it a canine.