Millions of TikTok users in the United States are no longer able to watch videos on the social media platform as a federal ban on the immensely popular app takes effect.The company’s app was removed Saturday evening from prominent app stores, including the ones operated by Apple and Google, while its website told users that the short-form video platform was no longer available. The blackout began just hours before the law took effect.For all the latest headlines, follow our Google News channel online or via the app.When users opened the TikTok app on Saturday, they encountered a pop-up message that said, “Sorry, TikTok isn’t available right now,” and prevented them from scrolling on videos.“A law banning TikTok has been enacted in the US,” the message said. “Unfortunately that means you can’t use TikTok for now.”“We are fortunate that President Trump has indicated that he will work with us on a solution to reinstate TikTok once he takes office,” the notice continued, in a reference to