A US law requires TikTok's Chinese owner, ByteDance, to sell the social media company to an American firm or face a ban.

He took the unusual step of filing court documents asking the Supreme Court to put the law on hold so that he could negotiate a deal for the sale of TikTok after he takes office.

TikTok will appear before the US Supreme Court on Friday in a last-ditch effort to overturn a ban, in a case testing the limits of national security and free speech. The popular social media platform is challenging a law passed last year ordering the firm to be split from its Chinese owner or be blocked from the US by 19 January.

Listen to live coverage as the Supreme Court hears oral arguments in TikTok's appeal to block enforcement of a federal law that would require the app to shut down in the United States. TikTok says it plans to shut down the social media platform in the U.

TikTok had an estimated $10.1 billion in U.S. advertising revenue last year and could score $12.8 billion this year, according to analysts at Benchmark. They reckon that revenue p