The latest threat from Donald Trump to impose additional tariffs on European goods marks a significant escalation in the transformation of trade policy into an instrument of broader political and technological confrontation. The immediate trigger is the European Union’s €890 million fine against Google for allegedly violating the bloc’s digital market rules. Brussels argues that the company unfairly favoured its own search services and restricted app developers from directing consumers towards offers outside the Play Store. Washington sees something very different. For the Trump administration, the fine is not simply a regulatory decision. It is an attack on an American national champion. Trump has responded by threatening a Section 301 investigation into what he describes as the European practice of taking money from US companies and, by extension, from American taxpayers. He has also promised substantial tariffs unless the penalties are reversed. The language is aggressive, but the underlying logic is entirely consistent with the new American economic doctrine. Trade policy is no longer limited to trade. It now encompasses technology, taxation, regulation, industrial policy, national security and the treatment of American companies abroad.

This distinction matters because the dispute is not really about Google alone. Apple, Amazon and Meta have all faced growing regulatory pressure in Europe. Brussels considers large technology platforms to be economic gatekeepers whose market power must be constrained. Washington increasingly views those same companies as strategic assets whose global dominance contributes to American innovation, productivity and geopolitical influence. The same company can therefore be seen in two entirely different ways. For Europe, Google is a dominant platform requiring supervision. For the United States, it is a national champion requiring protection. That divergence is now becoming a source of trade conflict. Only hours before Trump’s latest threat, the United States had completed the reconstruction of its broader tariff regime. Imports from nearly sixty economies, including the European Union, are now subject to baseline duties of between 10% and 12.5%, replacing the temporary 10% tariff introduced after the Supreme Court invalidated the administration’s previous measures.

The new framework is presented as a response to insufficient action against forced labour in global supply chains. Yet its real significance lies elsewhere. Section 301 has become the legal and political architecture through which Washington intends to rebuild a durable protectionist system after the courts restricted the use of emergency powers. The Google dispute demonstrates how flexible that architecture may become. Forced labour can justify tariffs. Industrial overcapacity can justify tariffs. Digital taxes can justify tariffs. Regulatory fines can justify tariffs. The list of potential grievances is almost unlimited. What is emerging is not a temporary tariff programme but a permanent system of conditional market access. This is economic statecraft in its most direct form.

Europe now faces an especially difficult dilemma. The European Union has spent years building what it sees as a sovereign regulatory model for the digital economy. The Digital Markets Act and related measures were designed to prevent a small number of technology platforms from controlling access to consumers, data and online commerce. From a European perspective, these rules are not discriminatory because they apply to any company meeting the relevant criteria. The problem is that most of the companies meeting those criteria are American. Legal neutrality therefore produces geopolitical asymmetry. Brussels may insist that it is regulating market power rather than targeting the United States, but Washington sees the economic outcome: large American companies repeatedly fined by European institutions while European technology firms rarely face equivalent exposure in the US market. This is why the dispute is likely to intensify. Europe considers regulation an expression of sovereignty. Trump considers it a form of extraction. Both sides believe they are defending legitimate interests. Neither side is likely to retreat easily.

For European companies, this increases uncertainty. Investment decisions become more difficult. Supply-chain planning becomes less reliable. Exporters face the possibility that regulatory disputes in unrelated sectors may produce tariffs on their own products. The consequences extend well beyond technology. A trade response to the Google fine could affect industrial goods, luxury products, chemicals, machinery, pharmaceuticals or consumer products. Tariffs need not target the original source of the dispute. Their purpose is political leverage. This is why trade wars spread so easily. The initial disagreement may concern digital competition. The retaliation may affect automobiles. The counter-retaliation may target agricultural goods. The economic damage migrates from one sector to another. The inflationary consequences must also be considered.

The inflationary environment is therefore no longer benign. Higher tariffs introduced during a supply shock can amplify the effect of both. Companies face higher import duties at the border, and higher transport costs before the goods even arrive. Some costs are absorbed through margins. Others are passed to consumers. Over time, the distinction becomes political rather than economic. Voters do not care whether higher prices come from tariffs, war or corporate behaviour. They experience only the increase in the cost of living. This is particularly important ahead of the US mid-term elections. Trump’s tariff policy remains politically popular among parts of his electoral base, especially where it is presented as a defence of American jobs and companies. Yet its economic consequences are increasingly difficult to separate from the broader inflation problem. The administration is therefore pursuing two objectives that may eventually conflict. It wants to protect American industry through higher trade barriers. It also wants lower consumer prices. It may not be able to achieve both simultaneously.

The most important development is not the size of any single tariff. It is the normalisation of tariffs as the default response to almost every international disagreement. Once this mechanism becomes established, uncertainty becomes permanent. Companies must assume that access to foreign markets can be altered by political decisions unrelated to their own sector. Governments must assume that domestic regulation may provoke external retaliation. Investors must assign a higher risk premium to cross-border business models. This particularly affects European companies because their home market remains relatively weak, while many depend heavily on exports and access to US capital. Europe’s strategic autonomy remains incomplete. It has the regulatory power to challenge American technology companies, but it lacks equivalent commercial leverage in the digital economy. Washington understands this imbalance. The United States controls the world’s largest consumer market, the deepest capital markets and many of the most important technology platforms. Europe controls regulatory access to a wealthy but slower-growing economic bloc. Both possess leverage, but American leverage is more immediately painful.

The Google fine may eventually be negotiated, reduced or absorbed. The more important precedent will remain. For decades, the United States and Europe argued over tariffs while agreeing on the rules of the economic system. Today, they increasingly disagree about the rules themselves. That is a far more serious conflict.