My issue is that we are pairing nationality with skin color or ethnicity here. Those are not mutually exclusive. There are 2nd or 3rd generation Asians immigrants in Mexico, just as there are Mexicans living in Ireland, and Irish people in India, etc.. Somebody could be a fully integrated national but not part if the nations major ethnicity. Even saying AFRICAN-American is kind of pointless, like it matters where your grand-grand-grand-grand-parents came from. They're as much American as anybody else. We don't call everybody else European-American for comparison.