The U.S. Department of Defense has accepted a luxury Boeing 747 from Qatar, intended as a temporary Air Force One. However, converting this 'gift' into a secure presidential aircraft could exceed $1 billion,

Simply the fact that the aircraft is coming from abroad, from an uncertain regulatory environment, raises the possibility that it could be tainted in some respect.

President Donald Trump has said the luxury airliner will be retrofitted to serve as Air Force One during his presidency.