Musk, the billionaire Trump ally who is playing a public role in the incoming administration, posted in support Friday of Alternative for Germany, or AfD, after the German government collapsed this week.

A senior lawmaker from Chancellor Olaf Scholz’s Social Democrats railed against Elon Musk’s interference in German politics and called for a new antitrust act to constrain his influence in the corporate world.

The tech billionaire who has already made a name in American politics offered his endorsement following a deadly German Christmas market attack.