The European Commission has called on U.S. President Donald Trump to cease imposing new tariffs on EU goods and to provide definitive clarity on his trade policy, following a landmark U.S. Supreme Court ruling that severely limited his authority to use emergency powers for such measures.
On Friday, the U.S. Supreme Court ruled that President Trump lacked the legal authority to impose tariffs under the 1977 International Emergency Economic Powers Act (IEEPA), invalidating most of his earlier trade measures. In response, Trump signed an order implementing a 10% “global tariff” citing different legal authority, subsequently stating his intention to raise it to 15%. He publicly criticized the Supreme Court justices who ruled against him.
In a statement released Sunday, the European Union’s executive branch demanded “full clarity” on the administration’s intentions. The Commission asserted that the current situation contradicts the commitments made in the August 2025 EU-U.S. Joint Statement, which promised “fair, balanced, and mutually beneficial” trade relations.
“The Commission will always ensure that the interests of the European Union are fully protected. EU companies and exporters must receive fair treatment, predictability, and legal certainty,” the statement read. The EU argued that any tariff increases must not exceed the “clear and all-inclusive ceiling previously agreed” between the two partners. The Commission also emphasized that tariffs ultimately increase costs for consumers and businesses, citing recent economic studies.
President Trump has consistently maintained that sweeping tariffs are necessary to protect American manufacturers from what he terms unfair global trade practices, frequently accusing other nations of “ripping off” the United States. His administration has also linked trade policy to geopolitical objectives, vowing additional tariffs on European nations that oppose his proposal for the U.S. to annex Greenland from Denmark.
The exchange underscores a significant escalation in transatlantic trade tensions. The EU’s demand for legal certainty highlights the fundamental clash between the Trump administration’s unilateral approach and the bloc’s insistence on negotiated, rules-based trade. The outcome of this dispute will have profound implications for global supply chains, consumer prices, and the stability of the multilateral trading system. The world will watch for the EU’s next steps, which may include formal dispute consultations or the implementation of countermeasures.
