The Republican and Democratic leaders of a House select committee have urged TikTok to sell its app.They also asked Apple and Google to be prepared to remove TikTok from their app stores by Jan. 19 if it is not sold.This follows a federal appeals court ruling that the U.S. law requiring Chinese company ByteDance to sell TikTok does not violate the First Amendment.The law, signed by President Joe Biden in April, aims to defend national security and protect TikTok's American users.