A US food importer has filed a lawsuit against former President Donald Trump, alleging he illegally imposed a 50 percent tariff on goods from Canada. The suit claims Trump circumvented the US Congress and improperly utilized a law dating back to the Depression era to enact the tariffs on Canadian imports. The importer argues Trump lacked the legal authority to impose such duties without congressional approval. The lawsuit seeks to overturn the tariffs and prevent future presidential overreach regarding trade regulations. This legal challenge centers on the constitutional separation of powers and the proper procedures for implementing trade policies affecting Canada. The case raises questions about the scope of presidential authority in trade and the role of Congress in regulating international commerce involving Canada.