The US Supreme Court's ruling deeming President Trump's emergency-decreed tariffs unlawful has been met with cautious optimism by European economic associations, who view it as a positive signal for rules-based trade and legal certainty. However, significant uncertainty persists for European businesses, as Oliver Richtberg of VDMA notes Trump possesses alternative legal avenues for imposing global tariffs, and the practical implications of the ruling remain unclear. The machinery and plant engineering sector, a major employer in the EU and Germany reliant on stable US export rules, faces renewed questions about the future of trade relations. The EU Commission, initially shocked by the potential invalidation of a deal with Trump, expressed a need for stability and predictability, while acknowledging the court's decision aligned with their own legal doubts. The ruling has jeopardized the ratification of the EU-US trade agreement, negotiated in July 2025, with the EU Trade Committee now reconsidering its planned vote.