The Supreme Court has unanimously upheld the federal law banning TikTok beginning Sunday unless it’s sold by its China-based parent company.

The Chinese-owned company said it would cut off its services unless the U.S. assures Apple, Google and other companies that they would not be punished for hosting and distributing TikTok.

White House Press Secretary Karine Jean-Pierre called TikTok’s threat to “go dark” on Sunday, January 19th, a “stunt,” and that there is no reason for TikTok to shut itself down before President-elect Donald Trump is sworn in on the 20th.