A panel of federal judges ruled Thursday that President Donald Trump's 10% [1] global tariff on most imports was illegal.

The decision restricts the executive branch's ability to unilaterally impose broad trade taxes without legislative approval. This ruling challenges the administration's approach to trade policy and could force a reversal of the current tariff structure.

The U.S. Court of International Trade in Washington, D.C. issued the ruling on May 7, 2026 [2]. The court found that the 10% [1] tariff was unauthorized by law because it was imposed without the express permission of Congress.

Judges determined that the administration's actions violated Section 122 of the Trade Act. This specific legal framework governs how the U.S. manages import duties, and it requires a clear mandate from lawmakers before such broad measures can be implemented.

The ruling comes after legal challenges argued that the president exceeded his constitutional and statutory authority. By bypassing Congress, the administration failed to meet the requirements set forth in the Trade Act to justify a global levy on the majority of imported goods.

The court's decision marks a significant legal setback for the administration's trade agenda. Because the ruling identifies the tariff as illegal, the government may be required to cease collection or provide refunds for the duties already paid by importers.

The U.S. Court of International Trade ruled that Trump’s 10% global tariff on most imports was illegal.

This ruling reinforces the principle of legislative oversight over national economic policy. By citing Section 122 of the Trade Act, the court has reaffirmed that the president cannot unilaterally rewrite trade law via executive order. This creates a legal precedent that may protect importers from future broad-based tariffs unless the administration secures a specific act of Congress.