The TikTok app logo is seen on a cell phone screen Saturday, Jan. 18, 2025, in Nashville, Tenn. (AP Photo/George Walker IV)

A message reading "Sorry, TikTok isn't available right now" is displayed on a cell phone screen on Saturday, Jan. 18, 2025, in Los Angeles. (AP Photo/Andy Bao)

Wearing a button in support of TikTok, Tiffany Cianci, who says she is a "long-form educational content creator," livestreams to TikTok outside the Supreme Court, Friday, Jan. 10, 2025, in Washington. (AP Photo/Jacquelyn Martin)