I apologize to everyone. I messed up when translating and ended up posting in Portuguese. It won't happen anymore!
Thanks for the quick response, @RedAndChile. My situation is similar, maybe more difficult:
I am an American citizen, but I have never lived in the United States. My wife is on NVC now and I need proof of domicile.
I am surrounding myself with all proofs of intention to establish domicile there together with my wife.
Thank you for clearing my doubts.