The popular social media app might be best known for viral dance crazes and other silly videos.A number of states — including Maryland, South Dakota, Texas, and others — have recently banned or blocked the app from phones and other devices used by their workers.In August 2020, then-President Donald Trump signed an executive order that essentially banned TikTok and another app, WeChat, from the United States.The ban never went into effect — there were the usual legal challenges — and in June 2021, the Biden administration reversed the order alongside a promise to evaluate the risks of China-based apps to U.S. national security."As painful as it is for me to say, if Donald Trump was right and we could've taken action then, that'd have been a heck of a lot easier than trying to take action in November of 2022," Warner told Vox."