evidence: The Justice Department is investigating Hunter Biden's finances including scrutinising some of his past Chinese business dealings and other transactions, a "person familiar with the matter" told The Associated Press in December. [...] The New York Post cited a purported email from Hunter Biden in August 2017 indicating he was receiving a $10m annual fee from a Chinese billionaire for "introductions alone", though it is unclear who was involved in the alleged introductions. [...] Tony Bobulinski told Fox News that, contrary to Joe Biden's statements that he had nothing to do with his son's business affairs, Hunter had "frequently referenced asking him for his sign-off or advice on various potential deals" in China.