UPDATE: TikTok is back online in the U.S., after going dark for about 15 hours starting on Saturday night. In a message to users, the social media app said it was restoring service after President-elect Donald Trump promised to pause a federal ban that was supposed to take effect on Sunday.
Trump, who previously supported banning TikTok, also proposed that the federal government buy a 50 percent "ownership position" in the app.
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