sy wrote:How about someone with dual citizenships of Finland and US? I guess he/she need to carry two passports while traveling from Finland to US and back.
I haven't done it yet, but this is what I've been told to do. Carry both. Coming into Finland show the Finnish passport, coming into the US show the US passport. Unless they ask, I am not going to tell them that I am a dual national. Then I would also carry the UVI papers with me explaining why I am a dual national, just in case there was some kind of problem.
This is just what my US customs friend who works at the airport and a few others, as well as the internet told me to do...
Of course I have only been to holiday in Finland without my Finnish passport, so I wouldn't know from first hand experience, and I haven't been in Finland for longer than a tourist would be allowed to, so it doesn't look suspicious to the US customs when I come back.