Thanks bumboclot, but it might be interpreted as meaning that pilots can commute to any country for which they have working or resident status. For example, a Canadian might base out of Vancouver, but only Frankfurt if he has a Euro passport.
I am sure that it is done, bus is it/will it be legal ?
You can imagine the mess you would be in if the Americans said "well we used to tolerate this arrangement, but now we have to enforce the letter of the law due to security concerns".
Ouch !
Any immigration lawyers or specialists have an opinion?