WASHINGTON (Reuters) – The chair of a U.S. Senate Judiciary subcommittee said on Tuesday that President-elect Donald Trump cannot ignore a law requiring Chinese-based TikTok to divest the short video app used by 170 million Americans by early next year. Senator Richard Blumenthal, a Democrat who is holding a hearing on Chinese hacking incidents, noted that Congress passed a law in April requiring divestiture of the app by Jan. 19,