TikTok is one of the world's most popular social media platforms, but it's also controversial because it's owned by the Chinese tech giant ByteDance. Its critics claim that as long as ByteDance is subservient to the Chinese government, TikTok can be used as a powerful tool for gathering data on its overseas users and swaying public opinion. Three years ago, the Trump administration proposed to either ban TikTok or force it to sell its U.S. subsidiary to an American company.