https://www.vice.com/en_us/article/g5pmnq/trump-declares-tiktok-a-national-emergency-officially-moves-to-ban-it

The President of the United States, facing a global pandemic killing more than 1,000 Americans daily, declared TikTok, a video sharing app beloved by more than a hundred million Americans, a “national emergency” Thursday and said it would be illegal for anyone in the country to do transactions with its parent company in 45 days.

The executive order puts pressure on its parent company, ByteDance, to sell TikTok to an American company. Microsoft has shown interest in purchasing the social media platform.