My wife (British) and I (USA) live in Vietnam where I work as a US government contractor. We are likely to be here for another two years, and may extend or move to a third country for a similar period after this, but longer term we are considering making the US our home. How long before making such a move does it make sense to apply for a green card? Given how long it seems to take, I am thinking we could get started on the process with the Embassy here.
Another question if anyone has any thoughts. I have already gone completely through the UK immigration system and now have a British passport myself. Would the documents I used and received for that process (i.e., I had several years on a spousal visa in the UK) be useful evidence of the validity of our relationship? Would the fact that my wife is my dependent for visa purposes in Vietnam?
Thanks very much for your help.