Birth certificate

A good rule to follow in the US is that if you have to do anything legal, be prepared to show your social security card or birth certificate.

And I've known a few South Americans that were living as citizens in the US but had to show a birth certificate upon getting divorced. It had something to do with changing behind-the-scenes paperwork about their status. If she is the one filing, that could be why she's asking and not him - to provide it to her lawyer.
Posted via Mobile Device

That's very awkward. Different rules in different states I guess. I never was asked to show mine (as of yet).

Shep, first of all I don't think the -copy- of the BC will do any good because you usually have to show the original anyway.

But to show real BC I can think of couple reasons. First, if his UK passport expired they may ask for BC to start issuing a new one. Second, if he decided to drop his UK citizenship (and it's one of the requirements to work in certain places or (I believe, but not positive) to do the clearance of certain level). I'm sure there are other reasons too.

Why not to ask his wife directly if you are concerned?

P.S. And I'm sorry about your mom! :(