I'm not really that up to speed on the visa side of things, but I can assure you that it is very difficult to lose your US citizenship unless you go to a consulate and swear out a renunciation in front of a consular official. Simply moving overseas, or getting a visa to do so - or even taking a second nationality - will not cost you your citizenship.
There may be some difficulties in taking the children to live outside the US, even if you do get custody. But I'll let the folks more familiar with US-UK visas advise you on that one.
Cheers,
Bev
There may be some difficulties in taking the children to live outside the US, even if you do get custody. But I'll let the folks more familiar with US-UK visas advise you on that one.
Cheers,
Bev