I am engaged to an American citizen, i am Canadian. I understand that I must get a finace visa to enter and live in the states. My 13 year old son will be coming with me and it is my understanding that he will get a visa when I get mine. My question if things do not work out in the states what would my son and I have to do to return to Canada? Also does my son have to have the medical and go to the interview with me? Are there seperated charges(monies) for each of to do the medical and interview?