I am married to a Brazilian and she has had her US green card for 4 years now so coming up on her eligibility for US citizenship. Do any of you know if she can maintain her citizenship in both countries? Our plan was to try and live between US and Brazil and we wanted the flexibility allowed by US citizenship. I have my perm ant residency in Brazil already and will never be fluent enough to gain Brazilian citizenship I'm afraid! Thanks for any info you can provide.