TikTok has gone dark in the U.S., the result of a federal law that bans the popular social media 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 app store.Sorry, TikTok isnt available right now, the message reads. A law banning TikTok has been enacted in the U.S. Unfortunately, that means you cant use TikTok for now.This story is developing