Key Facts
• U.S. Supreme Court scheduled next opinion release for January 20, 2026.
• Court has not disclosed which cases will be decided on that day.
• Judges may announce decisions at 10 a.m. Eastern Time during oral session.
• If tariff ruling is delayed on January 20, next possible date is February 20, 2026.
• Trump’s tariffs target broad trade partners including Japan, China, Canada, and Mexico.
• November 5, 2025 oral arguments questioned Trump’s unilateral tariff authority under 1977 IEEPA.
• Potential tariff refunds could exceed $130 billion (approximately ¥20.56 trillion) if ruling is against Trump.
• An adverse ruling would be Trump’s largest legal defeat since White House return.
Summary
The U.S. Supreme Court will announce its next set of opinions on January 20, 2026, amid anticipation over the constitutionality of tariffs imposed by former President Donald Trump. These tariffs, announced on April 2, 2025, affect multiple countries including Japan and those linked to fentanyl import concerns such as China, Canada, and Mexico. The court has not specified which cases will be decided, leaving uncertainty whether the tariff case will be addressed. During oral arguments in November 2025, most justices expressed skepticism about Trump’s authority to impose tariffs unilaterally under the International Emergency Economic Powers Act of 1977. A ruling against Trump could open the door to refunding over $130 billion in tariffs, marking a significant legal setback for his core economic agenda and his post-White House political efforts.
