The Justice Department is investigating the finances of President-elect Joe Biden’s son, including scrutinising some of his Chinese business dealings and other transactions, a person familiar with the matter told The Associated Press. The revelations put a renewed spotlight on questions about Hunter Biden’s financial history, which dogged his father’s successful White House campaign and were a frequent target of President Donald Trump and his allies. They also come at a politically delicate time for the president-elect, who is weighing his choice to lead an agency that is actively investigating his son.