TikTok said it would “go dark” on Sunday unless President Joe Biden’s administration offered assurance that it would not enforce a ban upheld Friday by the Supreme Court for the app’s U.S. operations to be sold or booted over “national security concerns.

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.

The White House on Saturday called TikTok’s statement warning that it will “go dark” on Sunday unless President Biden steps in a “stunt,” arguing the app doesn’t have to take action before President-elect Trump is sworn in.