My brother is dating a girl from Morocco. She currently lives in the US and my brother wants to marry her only after a short period. My family and I think she is using him in order to become a US citizen, but we do not know how to prove if she is already. She has only been in the US for one year. She has a sister here who has a daughter and I believe a husband. How can we verify if the girlfriend is legal or not? :confused: