Trump insists trade deals safe after Supreme Court ruling upends tariff authority, but partners aren't so sure

• Countries that negotiated early deals (like Japan, which pledged $550 billion for 15% tariffs) now face the same 10% universal rate as non-negotiating countries, effectively nullifying their concessions.
• India paused finalizing its interim trade deal, and the European Parliament postponed voting on its agreement for a second time, with EU officials warning of potential retaliation if the U.S. doesn't honor last year's commitments.
• Trump is exploring alternative authorities including Section 301 investigations and Section 232 national security provisions, but assembling a 'plan B' will take time, prolonging tariff-related market confusion.

Summary

Key Development: The Supreme Court ruled Friday that President Trump exceeded his authority by imposing tariffs under the International Emergency Economic Powers Act (IEEPA), striking down emergency duties on goods from nearly every country. Trump immediately replaced them with 10% tariffs under Section 122, effective Tuesday, and threatened to raise them to 15%.

Market Impact: The ruling has thrown bilateral trade agreements into disarray, as deals were structured around now-invalid IEEPA tariff rates. Countries that negotiated early agreements—like Japan, which secured 15% reciprocal tariffs in exchange for a $550 billion investment pledge—now face the same treatment as nations that didn't negotiate, effectively nullifying their concessions.

International Response:

• India paused plans to finalize an interim trade deal
• European Parliament postponed voting on its trade deal for the second time; EU officials prepared to retaliate if necessary, with a March 4 reconvening scheduled
• Canada's Ontario Premier Doug Ford stated "no deal is better than a bad deal"
• France praised the court's decision as a democratic check on power
• China committed to "honest negotiation" during Trump's planned visit next month
• Mexico is reviewing the decision's scope and impact

Administration Response: Trump warned countries against backing away from agreements, threatening higher duties under different trade laws. The administration plans to use Section 301 investigations (requiring formal trade practice investigations) and Section 232 (national security-based tariffs) as alternative legal pathways.

Outlook: Analysts note reassembling trade deals will require time and new legal processes, prolonging tariff-related market uncertainty. Eighteen countries have negotiated various agreements that remain incomplete and lack congressional approval.