New tariffs could be on the horizon, this time on Silicon Valley.

Donald Trump said Friday that his administration will open a trade investigation into the European Union after regulators fined Google about $1 billion, an investigation that could pave the way for new high tariffs on the bloc.

In a Truth Social post, Trump said the EU unfairly targets American technology companies and said the United States would immediately launch a Section 301 investigation into what he described as discriminatory treatment of American companies.

“The European Union is at it again and, as always, directly targeting BIG American companies!” Trump wrote: “The United States of America is not a ‘piggy bank’ for Europe.”

“The European Union will pay a very high price for this illegal and highly unethical conduct, which I have constantly warned them about,” Trump added.

Trump also criticized previous EU sanctions against Apple, Meta and Amazon, saying the bloc had repeatedly singled out American companies.

Trump’s comments came a day after the European Commission fined Google 890 million euros (about $1 billion), saying the company violated the EU Digital Markets Law by directing Google Search and Google Play users to its own services instead of those of its rivals. The commission said in a news release that the action was aimed at protecting competition and consumers.

“The best products should be successful because they are better, not because they are owned by the company that runs the search engine,” Teresa Ribera, executive vice president of the European Commission for a clean, fair and competitive transition, said in a statement.

The latest clash adds to a years-long dispute between Brussels and Silicon Valley. In 2025, the EU imposed sanctions under the Digital Markets Act of €500 million on Apple and €200 million on Meta after finding the companies had violated the bloc’s competition rules.

The White House and Google did not immediately respond to a request for comment.