Trump Opens Section 301 Probe of EU Over €890M Google Fine

The reason to pay attention to Friday's threat from Washington isn't the tariff itself, it's the mechanism. President Trump said the US would open a Section 301 investigation into the European Union's trade practices, one day after Brussels hit Google with €890 million in Digital Markets Act penalties, as CNBC reported. In a social media post he said 'the penalties will be entirely reversed and, we anticipate, a substantial TARIFF to be placed on them at the earliest possible moment.' Section 301 is the 1974 statute that lets the president impose import taxes on countries deemed to be running 'unjustifiable,' 'unreasonable' or 'discriminatory' trade practices, the legal bridge from a European antitrust ruling to a levy on European goods.

The underlying fine is worth understanding on its own terms. According to The Hill, the €890 million total broke into two decisions: €460 million for Google favoring its own shopping, hotel, transport and sports services in search results, and €430 million over restrictions that stopped app developers from steering users toward cheaper offers outside the Google Play store. It is the first penalty imposed on the company under the DMA, and US Trade Representative Jamieson Greer said the EU's enforcement action undermined 'constructive dialogue' and posed a 'real risk' to transatlantic trade stability, noting the fine pushes total penalties paid by Google to more than 2% of the EU's total budget.

Why this matters beyond one company: the DMA is the EU's landmark law for policing dominant online platforms, and this is its first live enforcement against Google. If a Section 301 process is now the reflexive US response, the political cost calculation for Brussels changes, and so does the compliance calculation for other US tech firms subject to the DMA, which now have an argument that fines can be negotiated down through trade channels rather than fought in court.

The honest caveats are the ones the reporting doesn't nail down. The threat is a social-media post and an announced 301 probe, not a published tariff schedule, and there is no published detail yet on which EU goods or sectors would be hit, or on what timeline. It is also unclear how the earlier €2.95 billion ad-tech antitrust fine, imposed in September 2025, fits into the same retaliation calculus, or how Google's own appeal against the €890 million penalty proceeds while Washington negotiates over the top of it.

The interesting group to watch is not the tech companies but the European exporters who have nothing to do with search or ad-tech and who could end up carrying the retaliatory tariff. That is where the pressure on Brussels to soften enforcement will actually come from.