The Trump administration is considering imposing visa restrictions on European Union and member-state officials responsible for implementing the bloc’s Digital Services Act, according to people familiar with the deliberations. The move would mark an unusual step of personally targeting foreign regulators over a technology law that Washington contends unfairly singles out American platforms. Separately, President Donald Trump on Monday warned that any country maintaining digital services taxes or other rules he views as discriminatory against U.S. technology companies faces "substantial additional tariffs" on its exports to the United States and possible export controls on advanced U.S. technology and semiconductors. In a post on his social-media platform, Trump said the measures would remain unless the contested regulations are scrapped. The threats are aimed primarily at Europe, where several states levy digital-services taxes and the EU is rolling out sweeping legislation such as the Digital Services Act and Digital Markets Act. The European Commission defended the rules as a sovereign right consistent with democratic values, noting recent enforcement actions against Chinese platforms. Trump’s twin warnings escalate trans-Atlantic trade tensions and revive long-running disputes over how nations tax and regulate large U.S. tech firms including Google parent Alphabet, Meta Platforms, Apple and Amazon.