SaraSara said:That is not right. An American-born Al Quaeda fighter captured in Afghanistan was not stripped of his citizenship and was tried as an American.
As I said, I went all the way up the chain at the State Department to get an answer to that question. Talked to several officials and was put through to the head of the department dealing with such issues. I requested, and got, a letter confirming that the only way to lose citizenship is to formally renounce it in a written statement sworn before the proper authorities.
You should think twice before passing mere opinions and hearsay as facts. Misinformation on this subject could do a great deal of harm.
The issue is that if a US citizen naturalizes in another country and then joins the military of that country. It is the combination of naturalization and intent that creates the problem. There have been numerous legal cases about this. It is not just restricted to military service, there are lots of other things as well. Joining the intelligence services of your naturalization country of citizenship is another big no-no.