TikTok has gone dark in the U.S., the result of a federal law that bans the popular short-form video app for millions of Americans — at least for now. TikTok users began receiving a message about the ban around 10:30 p.m. Eastern. As of Saturday evening, the app was also no longer available in the Apple or Google Play app stores. “Sorry, TikTok isn’t available right now,” the company’s message reads. “A law banning TikTok has been enacted in the U.S. Unfortunately, that means you can’t use TikTo...