The 6-3 decision, reported by AP News, marked a major setback for Trump's economic strategy and provided relief to trading partners like Canada, which had faced levies including "fentanyl" tariffs alongside China and Mexico.
The Supreme Court ruled that Trump exceeded his authority by using emergency powers for broad tariffs on nearly all nations, as detailed in SCOTUS analyses.
This tossed out a 35% tariff on most Canadian exports implemented last year, though exemptions under the USMCA for compliant goods from Canada persisted even as Trump later proposed a 15% flat tariff via Section 122 of the Trade Act.
Canada's International Trade Minister Dominic LeBlanc hailed the verdict, stating it confirms the tariffs were "unjustified", as quoted by NDTV and Firstpost.
LeBlanc highlighted ongoing challenges from remaining US levies on steel, aluminium, and automobiles, vowing "critical work" ahead, reported by Firstpost.
Ottawa now prioritises the upcoming review of the US-Mexico-Canada Agreement (USMCA), covering over 500 million people, with negotiations set to intensify by July 1, according to BBC reports.
LeBlanc plans meetings with US Trade Representative counterparts soon, amid Trump's preference for bilateral deals over trilateral renewal, as noted during his recent Mexico visit.
This ruling, while limited in immediate impact, signals potential for de-escalation in bilateral trade tensions