더보기Holding a USMCA Certificate of Origin will not block America's 50% Section 338 tariff. Learn how duty stacking overrides preferential trade rules and why 554 Canadian tariff lines are exposed. A USMCA Certificate of Origin eliminates normal baseline customs duties, but it provides zero legal immunity against statutory retaliation. The U.S. administration did not scrap the USMCA; it simply byp..
