Originally Posted by Aviatrix
This could well be a Danish rule rather than a US one. I know that in a number of European countries the law is that children may have dual nationality but adults must choose one or the other - I know this is the case in Germany where (with some exceptions) the age limit for dual nationality is 23, and I understand other countries have similar rules.
this is not true for germany anymore. I got double nationality french-german
last year by adopting french nationality. you have to ask authorities to keep german nationality before you choose a new one. it works. works in the other way, too.