By Andrew Chung, John Kruzel and David Shepardson WASHINGTON (Reuters) -TikTok warned late Friday it will go dark in the United States on Sunday unless President Joe Biden's administration provides assurances to companies like Apple and Google that they will not face enforcement actions when a ban takes effect.

What does a TikTok “ban” mean for TikTok users? The Supreme Court has now upheld a federal law that calls for a nationwide ban on TikTok unless it finds a new owner that isn’t Chinese by Sunday. But the White House says enforcing the law will fall to the next administration,