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🧵The U.S. Supreme Court declared President Trump’s use of IEEPA to impose global tariffs against U.S. trading partners illegal. @geopolitics.csis.org assesses how governments and key sectors around the world are likely to react. Learn more: www.csis.org/analysis/sta...

CSIS Africa Program expert Oge Onubogu writes that the decision will be treated with cautious optimism by African governments, especially with the extension of AGOA. However, African economies still harbor "significant doubts" about the administration's "trade over aid" strategy.

The ruling "provides relief for Canada and Mexico by reducing uncertainty and restoring some predictability," says CSIS Americas Program expert Christopher Hernandez-Roy. However, these benefits would be "significantly mitigated" by rising manufacturing costs under new Section 232 tariffs.

"Chinese leadership will not be counting on the Supreme Court to save its commercial relationship with the United States," write @chinaecon.csis.org, @chinapower.csis.org, and the Freeman Chair. Instead, Chinese businesses have found alternative export markets to counter stagnating domestic demand.

"Economic uncertainty will now increase significantly" in the European Union, writes @erep.csis.org expert @steinbergf.bsky.social, as 50% tariffs on European steel and aluminum will remain despite the ruling. This could cause current transatlantic tensions to intensify further.

India will likely welcome the ruling, writes CSIS India Chair expert Richard Rossow, but he predicts a continuation of "India’s broader effort to reduce reliance on any single market while simultaneously advancing domestic reforms aimed at attracting foreign investment."