Originally Posted by
rotorhead1026
In fact, they can. The US, for one, does. Now what your "home" country chooses to do with that renunciation is their business. The internet is not the place to get advice on something like this. Find a well-regarded immigration attorney and get your information there.
ehhhhh....
I'm a dual citizen of both countries and was just recently made citizen of the US and while you are somwhat correct, I'll post what I remember from memory (aka I could be wrong)
the US makes you renounce your allegiance to your previous country. That means you can still be a citizen of say, Brazil, but if the US and Brazil were to get into war, you pledge that you fight for the United States.
So you kinda give up your citizenship as far as glory and fighting power, but that's that. They can't take me in and say give me your Brazilian passport and all your docs, we're going to shred them.
That's crazy! I'd walk out and tell them good luck in future and move back to a sane land