TikTok plans to cease operations in the United States on Sunday unless President Joe Biden intervenes before he leaves office one day later.

President Joe Biden's administration said it will be up to President-elect Donald Trump to implement the ban on TikTok, which is set to take effect in two days after the Supreme Court upheld the law Friday.

Some U.S. lawmakers are advocating for an extension on the deadline for TikTok's Beijing parent company to sell U.S. assets before a ban takes effect.

TikTok warned it will go dark in the United States unless President Joe Biden's administration provides assurances to companies like Apple and Google that it will not face enforcement actions when a ban takes effect.

The app says it will shut down Sunday unless the sitting president can assure tech companies that he won’t enforce the law.

President Joe Biden won’t enforce a ban on the social media app TikTok that is set to take effect a day before he leaves office, a U.S. official says.

The Supreme Court upheld a law banning TikTok in the US over national security concerns unless its Chinese parent ByteDance sells it. Without immediate assurances from the Biden administration, the app will go dark on January 19.

Congress last year in a law signed by President Joe Biden required that TikTok’s China-based parent company ByteDance divest the company by Jan. 19 or risk getting banned in the U.S.

TikTok is pressuring President Joe Biden in his final days to decline to enforce the ban; the administration says the timing makes any decision Donald Trump’s responsibility.

U.S. Supreme Court has upheld the TikTok ban, leaving the app's future uncertain. With Joe Biden set to demit office soon, questions arise regarding whether he will enforce this decision as one of his final acts.

In TikTok's case it could give Congress time to consider a new bill that would give ByteDance another 270 days to find an American buyer before being shut down.