ok, my wife got a very nice job offer in Korea as a contractor. she was told that for her daughter that is from a previous marriage, but she has full custody, she would need a from where the father of the girl would need to sign that he agrees to the child leaving from the US to Korea. Is this true? and if yes, where would i find more info on this issue, as were are not completely sure the father would agree to this move. thank you for any helpful information.