A federal appeals court panel on Friday unanimously upheld a law that could lead to a ban on TikTok in a few short months, handing a resounding defeat to the popular social media platform as it fights for its survival in the U.S. The U.S. Court of Appeals for the District of Columbia Circuit denied TikTok’s petition to overturn the law — which requires TikTok to break ties with its China-based parent company ByteDance or be banned by mid-January — and rebuffed the company’s challenge of the...