US government joins Elon Musk's legal challenge to European Union's €120 million fine on X

On Thursday, September 24, 2026, the US government formally sought to join Elon Musk's legal challenge against the European Union's €120 million fine on his social media platform X. The fine was imposed under the EU's Digital Services Act for alleged transparency and design rule breaches. The US Justice Department, led by Assistant Attorney General Brett Shumate, argued that the European Commission overstepped its authority by targeting American companies not operating within its jurisdiction. This move escalates tensions between the US and EU over digital regulation and could set a precedent for how such fines are contested.