During his first term as president, Donald Trump led the effort to ban TikTok, the hugely popular video-sharing site he said posed a threat to U.S. national security. But on the eve of his return to the White House,

Some users saw the social media app come back online on Sunday, following a shutdown when a federal law went into effect requiring a sale or ban.

Trump announced the decision in a post on his Truth Social account as millions of TikTok users in the U.S. awoke to discover they could no longer access the TikTok app or platform. Google and Apple removed the app from their digital stores to comply with a federal law that required them to do so if TikTok parent company ByteDance didn't sell its U.

The app went dark nationwide on Saturday night, but the company indicated it was in the process of restoring the service after assurances from President-elect Donald J. Trump.

"A law banning TikTok has been enacted in the U.S. Unfortunately, that means you can't use TikTok for now. We are fortunate that President Trump has indicated that he will work wi

TikTok went offline in the United States Saturday night, less than two hours before a ban was slated to go into effect.