The European Union’s executive body has announced it is prepared to defend a 120 million euro (£103 million) fine imposed on the social media platform X, after the United States government expressed support for a legal challenge brought by X’s owner, Elon Musk, seeking to have the penalty annulled.

The fine, issued by the European Commission late last year following a two-year investigation, marked the first enforcement action under the EU’s Digital Services Act (DSA), a set of regulations aimed at increasing online platform accountability across the 27-member bloc. According to EU regulators, X’s use of blue checkmarks violated the rules by employing “deceptive design practices” that could mislead users and potentially expose them to scams or manipulation.

The Digital Services Act requires technology companies operating within the EU to ensure safer online environments and imposes significant financial penalties for non-compliance. The European Commission, which serves as the main enforcer of the DSA, maintains that the fine is justified given the identified regulatory breaches.

However, the US Department of Justice has taken the unusual step of backing X’s legal motion to dismiss the case at the European Union’s General Court. The department argued that upholding the fine could have substantial consequences for American online platforms and other companies offering digital services in the EU. US officials have previously criticized the DSA framework as a form of online censorship, reflecting broader tensions between Washington and Brussels over digital regulation.

The legal dispute highlights growing friction over regulatory approaches to digital content and platform governance between the European Union and the United States. While the EU emphasizes consumer protection, transparency, and safety in its digital market, US authorities express concern over what they characterize as excessive restrictions that could hamper innovation and free expression.

As the case proceeds, all parties anticipate a significant precedent regarding the enforcement of the EU’s digital regulatory regime and its impact on global technology companies operating across international borders.