A three-judge panel of the U.S. Court of International Trade ruled Thursday that President Donald Trump's 10% global tariffs are illegal [1], [2], [3].

The ruling challenges the executive branch's authority to unilaterally alter trade costs without legislative consent. Because these tariffs affect the price of nearly all imported goods, the decision could force a significant shift in U.S. trade policy or trigger a legal battle over presidential powers.

The court in New York issued the decision on May 7, 2026 [1], [2]. The panel found that the 10% [1] tariffs violate a trade law established in the 1970s, which requires that any such tariff actions receive express permission from Congress [1], [2], [3].

The judicial panel consisted of three judges [2]. In their ruling, the court determined that the administration bypassed the necessary congressional approval process required by the statutory framework governing international trade. This lack of legislative authorization rendered the global tariff mandate unlawful under current U.S. law [1], [3].

The decision follows a period of economic volatility linked to the global tariff implementation. By ruling the tariffs illegal, the court has created a legal mandate for the administration to either seek retroactive approval from Congress, or cease the collection of these duties [2].

Legal representatives for the administration have not yet detailed their next steps, though the court's ruling provides a narrow block on the current implementation of these specific trade measures [2]. The case highlights a continuing tension between the executive's desire for rapid trade maneuvers and the legislative requirements of the 1970s trade statutes [1], [3].

The court ruled that Trump's 10% global tariffs are illegal and violate U.S. trade law.

This ruling reinforces the primacy of congressional authority over trade policy, limiting the president's ability to use tariffs as a unilateral tool. If the administration cannot secure congressional approval or overturn the ruling in a higher court, the U.S. may be forced to refund collected duties or dismantle the global tariff structure, potentially altering international trade relations and domestic consumer prices.