My husband was brought to the USA when he was 4 years old and as a teenager he received his resident card. He does not know if his mom filed for him to become a citizen or not. The thing is that he is now 32 years old and he's always used his ss# as a " citizen" number. We are afraid to go and find out since we do not have any confirmation. I need some advise as of what to do or if its safe to go to an immigration lawer.