So, we know that the US has an agreement with several countries about

[zbdent]

dual citizenship.

Apparently, you can be a citizen of the US and another country without renouncing your US roots. I remember that there was that issue when it came to the "absentee" ballots in 2000. Or something like that.

Right?

How about a list of which countries the US allows an "American" to also be a citizen of without losing the US citizenship.

[billyoc]

1. Ireland. n/t

[Kellanved]

2. AFAIK:

The European Union
Canada
New Zeeland
Australia
Japan
And a few more.

Anyway, it is always decided on a case-by-case basis and while the US allows Dual Citizenship, some countries don't.

For instance, I could apply for naturalization in the US and keep my German passport; on the other hand, an American applying for citizenship in Germany would have to forfeit his American citizenship(it might be possible to get around this).

[Frozen Hamster]

3. Iceland n/t

[Adelante]

4. Mexico

You have to show you have been here some amount of time over a two year period -- through entries and exits on your US passport -- and you can apply for Mexican citizenship. There is something in the Mexican constitution about renouncing foreign citizenship, but it doesn't carry over to immigration rules, so you don't have to renounce your native citizenship when you become a Mexican citizen. There was a time, though, when you were expected to go to a US consulate and renounce. They don't ask it anymore.

[Heidi]

5. Switzerland. n/t