European Union lawmakers have put a major U.S. trade agreement on hold after the U.S. Supreme Court struck down key tariffs imposed by President Donald Trump, creating renewed uncertainty in global markets. The pause comes as Trump announced new global duties under a different legal authority, prompting Brussels to seek clarity before moving ahead. For Canada, the development carries direct implications. As one of the United States’ largest trading partners and already navigating its own tariff disputes with Washington, Ottawa is closely watching how the ruling reshapes American trade powers. Any recalibration of U.S. tariff authority could influence North American supply chains, affect cross border pricing, and potentially reopen discussions around trade stability under existing agreements that bind Canada, the U.S., and Mexico.
European Union lawmakers have paused ratification of a key trade agreement with the United States after the U.S. Supreme Court struck down many of President Donald Trump’s tariffs, injecting fresh uncertainty into transatlantic trade. The move reflects growing concern in Brussels over how Washington will proceed after the court ruled that Trump lacked authority under a 1977 emergency law to impose sweeping duties.
The decision to delay came as Trump warned that countries attempting to “play games” with tariffs could face significantly higher duties. Within hours of the ruling, he announced a new global tariff under a different legal authority, initially set at 10 percent before being raised to 15 percent. The duties are expected to take effect Tuesday, with limited exemptions, and would expire in 150 days unless extended by Congress.
European Parliament negotiators postponed a vote that had been scheduled for Tuesday, saying clarity was needed from Washington before moving forward. Trade committee chair Bernd Lange stated that lawmakers want assurances the United States will honor the terms of the existing deal. Green lawmaker Anna Cavazzini added that proceeding with a vote amid what she described as “enormous uncertainty” would not be justifiable. European Commission spokesperson Olof Gill echoed that position, saying Brussels is awaiting detailed explanations from U.S. counterparts.
Under the EU–U.S. agreement reached last July, Washington had committed to a flat 15 percent tariff on most EU goods. However, analysts warn that Trump’s newly announced duties could effectively push tariffs higher once existing “most favored nation” rates are added. Jacob Funk Kirkegaard of the Peterson Institute for International Economics said that average tariffs on EU manufactured goods could rise to 17 or 18 percent, rather than remain at 15 percent. Despite that risk, he suggested there may still be strategic value in maintaining the so-called Turnberry agreement, as it provides more predictability than an escalating tariff cycle.
The Supreme Court’s ruling marked a rare judicial setback for Trump, whose trade policies have reshaped global markets since his return to office. While the decision limits his ability to impose tariffs unilaterally, experts note that alternative legal pathways remain available, though they would likely involve a more structured process. China has already called on Washington to withdraw what it described as unilateral tariffs, while the United Kingdom signaled that its own 2025 trade deal with the United States is unlikely to face major disruption. For now, the European Union is choosing caution, waiting for clearer signals from Washington before locking in a trade framework that could soon shift again.
