It is it is possible your mother is a United Stares citizen based upon your grandfather's birth in the country. However, your grandfather being born in the United States is not enough. There are several criteria that must be met depending upon when your mother was born. I recommend you consult an experienced immigration attorney. You can find more information on citizenship at http://myattorneyusa.com/citizenship-and-naturalization.
Answered on Jan 07th, 2016 at 5:11 AM