EU vows to defend its stand against X after the US backs a court challenge from Elon Musk

The European Union's executive arm said Friday it's prepared to defend a 120 million euro ($137 million) fine against the social media platform X after the U.S. government threw its support behind a legal effort by Elon Musk this week to have the case dismissed.

The European Commission fined X late last year for breaches of the bloc's landmark digital regulations, stoking tensions with Washington.

The U.S. Justice Department said Thursday that it had filed an application to support X's bid to have the case annulled at the European Union's General Court. It was the second time in three months that the Justice Department has intervened to defend a company owned by Musk.

In July, the Justice Department filed a motion to intervene in a civil rights lawsuit that alleges Musk's xAI is illegally running dozens of natural gas turbines to power a $20 billion AI data center in Mississippi.