4. Canada's sky high tariffs on U.S. eggs, poultry, milk
Fast forward to today. Smoot-Hawley is long gone, but Canada continues to charge steep tariffs on U.S. imports of eggs, chicken and milk.
The U.S. does have tariffs on some goods coming from all countries, but they are not nearly as high as Canada's.
Experts say these tariffs continue to irk some U.S. dairy and poultry farmers, who essentially can't sell into the Canadian market. But they doubt much will change since the tariffs have been in place for decades now.