SEOUL — Governments and companies worldwide are assessing the fallout from the U.S. Supreme Court’s decision striking down most of President Trump’s tariffs, followed by his immediate response of imposing a new round of import taxes. The ruling, handed down Friday, and Trump’s subsequent actions have injected fresh turbulence into global trade, prompting emergency meetings in capitals from Seoul to Mexico City.
South Korea’s Trade Ministry convened an emergency session Saturday to analyze the implications of the court’s decision and the newly announced tariffs. While tariffs on South Korean automobiles and steel, imposed under Section 232 of the Trade Expansion Act, remain in place, other reciprocal tariffs levied under the International Emergency Economic Powers Act (IEEPA) have been voided, according to The Hani. Trump, however, has countered by announcing a 15% tariff on nearly all imports, escalating a trade conflict that began when he returned to office 13 months ago.
The Supreme Court, in a 6-3 decision, ruled that Trump exceeded his authority by imposing broad tariffs under IEEPA, asserting that the U.S. Constitution grants Congress the power to “lay and collect Taxes, Duties, Imposts and Excises.” The decision, as detailed in the court’s opinion (Learning Resources, Inc. V. Trump, No. 24-1287), effectively nullifies the tariffs applied to South Korea and other trading partners under the now-invalidated legal framework.
In Mexico, Secretary of the Economy Marcelo Ebrard urged “prudence” following the ruling, stating the demand to understand Washington’s next steps and their potential impact on the country’s economy. Mexico and the U.S. Share nearly $1 trillion in annual two-way trade, making it particularly vulnerable to shifts in U.S. Trade policy. Ebrard plans to travel to the United States next week for clarification, while President Claudia Sheinbaum indicated a careful review of the court’s resolution before offering a formal opinion.
Despite concerns, approximately 85% of Mexican exports to the U.S. Are currently exempt from tariffs due to the United States-Mexico-Canada Agreement (USMCA). However, the agreement is scheduled for a joint review starting July 1, six years after its initial signing during Trump’s first term, adding another layer of uncertainty. Sergio Bermúdez, head of an industrial parks company in Ciudad Juárez, expressed skepticism about Trump’s pronouncements, noting that businesses are “analyzing, trying to figure out how it’s going to affect them.”
The impact extends beyond Mexico and South Korea. In Europe, French President Emmanuel Macron acknowledged the importance of checks and balances within democracies, praising the “rule of law” in the U.S. While also cautioning against complacency. “I note that President Trump…said he had reworked some measures to introduce new tariffs, more limited ones, but applying to everyone,” Macron said, signaling a need for close monitoring of the evolving situation.
Swissmem, a Swiss technology industry association, highlighted the damage already inflicted by the previous tariffs, reporting an 18% decline in exports to the U.S. In the fourth quarter of last year. While welcoming the Supreme Court’s decision as a “quality decision,” the association acknowledged that the situation remains fluid.
The Supreme Court’s decision also voided tariffs imposed on Mexico, China, and Canada intended to pressure those nations to address fentanyl trafficking, as reported by The Telegraph. The future of these measures, and the broader trade landscape, now hinges on the implementation and potential challenges to Trump’s newly announced 15% tariff, leaving businesses and governments bracing for further shifts.
