News of the subpoena follows a joint announcement from Hunter and his father Joe Biden's campaign last week which acknowledged that he was under investigation for tax fraud, with the Washington Post noting that Hunter had yet to be interviewed by the FBI or served with subpoenas.

The subpoena, issued Tuesday, covers a wide swath of Hunter's taxes and international business dealings - in what could be a serious case against the Biden family (or a serious attempt to put a DOJ 'bow' on the 'matter'). AP notes that it's unclear if Burisma is a central part of the investigation - despite Joe Biden admitting on tape that he had Ukraine's chief prosecutor fired during the same period as said investigator, Viktor Shokin, was investigating Burisma's founder for corruption.