QUOTE(amelynn43 @ Nov 2 2006, 09:47 AM)

I would really appreciate any help with this, as I guess I was unaware of a few things regarding U.S. Citizenship. My fiance is English, and we have talked about it being important for him to keep his English Citizenship...however, I have just found out from my Senator's office that if we ever decided to move to the UK, if Rich is only a permanent resident, he loses this, and we have to start the process all over. The congressman's assistant told me that some countries allow someone who has become a U.S. citizen, to then go back to their home country and apply for citizenship again. Does anyone know if this is true of the U.K. or where I can find this information out? Has anyone gone through this? Thanks!
Maybe you misunderstood what the person told you.
My husband is English also. He just naturalized to US citizen this year so that we woiuld not face the problem you sketch.
While a Permanent Resident, the PR must maintain the US as their primary residence. If they move abroad permanently (for one example), they could lose their PR status and would not be able to move back to the US without reimmigrating (or a couple of other similar options).
Once the person takes US citizenship, they're just like any other USC, except they can't be president.
The UK has no real objection to one of their citizens taking US (or any other) citizenship. The most important thing to remember about dual citizenship is that you deal with each country individually. To the US, he will always be a USC (they ignore the UKC). To the UK, he is always one of theirs.