My wife and I have talked about it, but I would have to reliquensh one of my other passports to do so and I would never be able to get that passport back.
I have had my green card for 5 years or so.
last recollection.. you have to be 9years?
last i recall that you have to give them any old passport on your interview. dont think US allow dual citizenship. its been awhile so dont know the current rules now.