WASHINGTON (Reuters) - TikTok CEO Shou Zi Chew said Wednesday the company expects to win a legal challenge to block legislation signed into law by President Joe Biden that he said would ban the popular short video app used by 170 million Americans.

"Rest assured -- we aren't going anywhere," he said in a video posted moments after Biden signed the bill that gives China-based ByteDance 270 days to divest Tiktok's U.S. assets. "The facts and the Constitution are on our side and we expect to prevail again."