Hi there, I am writing this on behalf of my wife. My wife's sister who is a US citizen is applying for F4 visa for us. She is doing it through USCIS online portal. We came to know about cross chargeability. My wife was born in India and I was born in Nigeria(spouse). Is it possible to apply for cross chargeability for F4 category in this using my birth place which is Nigeria. Didn't find any option on USCIS portal to mention my birth place or to consider cross chargeability. Can it be done while petitioning itself? Could you please let me know what's the process of including cross chargeability when petitioning F4.

User's Location: Waterloo, Alabama, Canada

Category: Employment-based Green Card