He absolutely is an American in his being. He may have roots in India but he sees the greatness of this country and its history. Check his writings and his comments.
Many so called conservatives are under the hood haters of people who look different. It is because they are not confident in their own abilityh to compete with them. Every intelligent American I came across in my 63 years in USA, respected meritocracy. Bigots and racists are low intelligence people who are afraid to compete in a meritocracy.