I am a US citizen. My wife is Chinese. We have been married for seven years. She has a 14 y/o son (Chinese citizen) and, together, we have a 2 y/o daughter (US citizen). We live in China and have for the past eight years. I am filling out the I-864 and I am form challenged. Do I fill out one I-864 for my wife and one I-864 for my stepson? Do they then each become the "principal" immigrant in Part 2? or what? Part 1 line 1. Is this for my name? last name first, first name last? Are petitioner and sponsor the same? I mean are they synonyms and used interchangeably? 1.e. There is a "sponsor/petitioner", a "1rst joint sponsor", and a "2nd joint sponsor". Does that mean 3 people can be sponsors? The "sponsor/petitioner" can have two additional people to assist in the financing? Part 2 line 5. I have a GUZ and an AA confirmation number. What goes in the Alien Registration area if I don't specifically have an Alien number? Part 3 line 1. and 2. Since I am sponsoring both my wife and stepson do I check both 1 and 2? Line 2 has a note stating: Do not include any relative listed on a separate visa petition. Well, I filed an I-130 for my stepson as required so do I put my stepson as Family Member #1 or not? Line 7. If I check line 7 does it mean that I don't have to file a separate I-864 for my stepson? This ties back to the first question..ie: Do I file separate I-864's with duplicate supporting documentation for each? Last query (for now) My sister is going to co-sponsor (joint sponsor is the same thing?); Does my sister simply fill out ONE form with both names and include her financials? Finally, thank you all. I really mean it. You have to be a paralegal to get through all of this. I understand the intent, it is the clarity of the instructions that tend to be less specific and more generalized. Once more, thanks. The empirical data available in this forum is priceless.