My sister's ex just (American) has been living in the middle east and has remarried to a foreigner. He and my sister have a 5 year old together. The ex just asked my sister for her birthday and their daughter's SSN for immigration purposes. Is there any reason he would need his ex-wife's birthdate for his new wife to come here? She doesn't trust him and doesn't know why he would need this information. She has full custody of their daughter who barely will talk to her father.
In fact, it's easier for me to remember than my own.