I'm sure this is a pretty unique situation I've gotten myself into, and it's certainly complicated. I'm not sure what I should be doing.
I came to Rio de Janeiro, Brazil in May of 2013. I got a tourist visa good for 90 days. In August of 2013, I went with my Brazilian girlfriend to the Federal Police at the airport and extended the visa until mid-November. On November 7, I married my Brazilian girlfriend.
My intention is to stay in Brazil until my wife is granted a visa and allowed to enter the United States with me. That should take us about a year. So right now I'm in the country illegally and have been since about November 15th. From everything I've read, this isn't an ideal situation, but not much can happen. Worst case scenario is I get deported or have to pay a fine when I leave or return. If I was asked to leave the country, I'm fairly certain there would be a legal way around it since I'm married to a Brazilian national. Perhaps applying for the permanent visa. So it's cause for some anxiety, but I'm not particularly worried about it.
My problem is this. I just realized my United States passport expires in mid-March. I'm supposed to renew it at a local embassy or consulate. Due to my illegal status, I obviously don't want to do that.
So, I'm wondering. Is there anything to stop me from mailing my current passport to the United States and having a family member have it renewed by mail for me and then send it back to Brazil? Are there any considerations to be taken in doing this? What are the risks?