America’s CBS News has mounted an aggressive defence of its report about President George Bush’s service in the Air National Guard, saying broadcast memos questioned by forensic experts came from “what we consider to be solid sources”.

AN argument is raging over whether documents which suggest US President George Bush lost his status as a National Guard pilot during the Vietnam War may be fake.

Documents which suggest President George Bush lost his status as a National Guard pilot during the Vietnam war because he fell below Air Force standards and disobeyed an order may be fake, it emerged today.