Here's another idea (mine this time): Maybe the backlash against the famously wet President Smith insures that Prohibition gets at least a few more years of life? ("Smith puts booze ahead of bread!")
(I can actually see at least one distinguished economist--Irving Fisher--arguing that Smith's failure to enforce Prohibition made the Depression significantly worse... https://books.google.com/books?id=JXa9MgztR2AC&pg=PA15)