TikTok has today asked a U.S. appeals court to temporarily block a law that would require its parent company, ByteDance, to sell it to a US-Based company by January 19th, pending a review by the U.S. Supreme Court. The appeal comes after a U.S. federal appeals court ruled on Friday that TikTok could be banned if not sold ahead of the deadline.

The emergency motion warns that if the ban takes effect, it will “shut down one of the nation’s most popular speech platforms—for its more than 170 million domestic monthly users on the eve of a presidential inauguration.”

Concerns that ByteDance will not divest by 19 January has prompted multiple American influencers and fashion brands to urge their followers and subscribers to also follow them on Instagram and YouTube. Those who have built businesses based on their substantial TikTok following risk losing income and influence should the ban go ahead. For fashion brands selling via TikTok shop, the risk is magnified. Daily sales on the platform account for more than $7 million spend per day.

TikTok has said that divestiture is “not possible technologically, commercially, or legally”.

The US government maintains that TikTok is a national security threat because China could use the app to access personal data from millions of Americans.

TikTok and ByteDance have requested a decision on the request by the 16th of December.