Why fight city hall? Put down the child's name, the adults he (she) will be travelling with, the itinerary, a statement giving permission to travel, (and while you are at it a statement giving permission to make medical decisions) and why not the social security number? John Jones with SS# xxx-xx-xxxx is a seperate and distinct person than all the other John Jones in the world. Go overboard and do more, it will be a lot better than being turned away at the airport or at the cruise terminal. By the way, even a nine year old should have a social security number, for that matter so should the 3 year old ,. Don't fight it . It is being done to prevent children from being taken from the country during custody battles.