Rightly said Susana. I would like to add that there is also a cultural standpoint. If you are born and educated in America, the chance you are more American than Chinese or Thai. Do you celebrate Songkran and Chinese New Year? The normal convention is "Ethnicity1 Ethnicity2 Nationality'. So you are Thai Chinese American, but to simplify things, it is better to call Asian American. I am Chinese Malaysian. I can't change my Ethnicity but I may change my Nationality one day since the extremist Government party members always ask the Chinese Pigs to go back to China. Chaiyo.