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Supreme Court Strikes Down Trump's IEEPA Tariffs – Historic 6-3 Ruling Breakdown

February 20, 2026: The U.S. Supreme Court rules President Trump's use of the International Emergency Economic Powers Act (IEEPA) for tariffs is illegal. No presidential authority for tariffs under IEEPA—Congress holds taxing power. Invalidates 10% baseline global tariffs, higher targeted duties on China, Mexico, Canada, EU, Japan, South Korea, and "Trade Liberation Day" reciprocal tariffs.

Trade lawyer Jeremy Page (Paige Fjord, Chicago) gives expert analysis: Why the Court rejected IEEPA as a tariff/emergency tool, refund possibilities via Court of International Trade, admin alternatives (Section 232, 301, 122, 338), global trade impacts, and next steps.

• Why this Supreme Court tariff case is historic
• IEEPA basics: No tariffs mentioned, revenue power stays with Congress
• Trump's IEEPA uses: Fentanyl, immigration, deficits, Liberation Day
• Court: Tariffs aren't authorized, even in emergencies
• Unwinding tariffs & country responses
• Importer refunds? CIT role & injunction questions
• 6-3 vote details (Roberts opinion)
• Plan B: Other tariff statutes explored

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