I just read all the instructions, cover all your bases and file all 3 forms. You said you live with your dad right? He is the co-sponsor right? The I-864A gets attached to your I-864.Every sponsor has to file a I864 no matter where they live. You and any co-sponsors must file an I864. I864 A is an additional form you file if the co-sponsor and you are related and live in the same house or if he claims you on his taxes as an dependent .
