The two planes currently used as Air Force One have been flying for nearly four decades, and Trump is eager to replace them. During his first term, he displayed a model of a new jumbo jet in the Oval Office, complete with a revised paint scheme that echoed the red, white and dark blue design of his personal plane.

Trump says he'd be "stupid" to not accept the aircraft "free of charge", after Qatar denied it amounted to a gift.

Any donation to this government is always done in full compliance with the law,” White House press secretary Karoline Leavitt said Monday.