We are, my wife and I, started the process of the I-130. I would like to ask a question about the affidavit of support. My wife is American but she lived and worked the last 4 years outside the USA, teaching in private colleges. We are both working right now outside the US. As she could not make tax declarations as she did not work in the US, is a letter from our employer and her savings can be enough. She earns 3600 US Dollars monthly and she has 18 000 USD on her saving account. Any info please... thanks.