FILE PHOTO: Teenagers pose for a photo while holding smartphones in front of a X logo in this illustration taken September 11, 2025. REUTERS/Dado Ruvic/Illustration/File Photo

(Refiles to add story identifier for some readers, no change to content of story)

WASHINGTON, Dec 5 (Reuters) - The chairman of the U.S. Federal Communications Commission denounced the EU's fine of Elon Musk's social media company X on Friday for breaching EU online content rules.

"Once again, Europe is fining a successful U.S. tech company for being a successful U.S. tech company," FCC Chairman Brendan Carr said in an X post. "Europe is taxing Americans to subsidize a continent held back by Europe’s own suffocating regulations."

(Reporting by Katharine Jackson and Doina Chiacu; editing by Susan Heavey)