A former top aide to President Biden — who reportedly was questioned by federal investigators as part of the probe into the president's handling of classified documents — exchanged emails with Hunter Biden on numerous occasions, according to a Fox News Digital review. Kathy Chung, Biden's executive assistant when he was vice president and the Pentagon's current deputy director of protocol, is among several former aides to the president to be interviewed by law enforcement, NBC News reported Thursday. Chung and the others questioned reportedly helped move materials and belongings from Biden's office at the end of the Obama administration...