I just found this interesting and intriuging news story on NineMsn.
From what l can gather a USA national caused a BA flight (Lon-Mexico) to be turned around and sent back.
The Sun newspaper cited a security source as saying: "This is the first time anyone can recall a British flight being banned from US airspace. It shows how nervous the Americans are when it comes to us.
It seems the US refused entry to the flight into their airspace due to the individual being onboard.
Jet U-turns after doubts over passenger
What l find interesting is that the person was a USA national. Yet they still were somehow "banned" from re-entering their home country.
From what l can gather a USA national caused a BA flight (Lon-Mexico) to be turned around and sent back.

The Sun newspaper cited a security source as saying: "This is the first time anyone can recall a British flight being banned from US airspace. It shows how nervous the Americans are when it comes to us.
It seems the US refused entry to the flight into their airspace due to the individual being onboard.
Jet U-turns after doubts over passenger
What l find interesting is that the person was a USA national. Yet they still were somehow "banned" from re-entering their home country.