There are very few Americans left in America. Start asking people if they are Americans. A person might well make Kung Pow tacos for dinner, but when you ask them if they are Americans, you will get a quick answer "I'm Chinese". People do not identify as Americans. They identify with where their ethnicity hails from. Because they identify with foreign countries, that's where their loyalty lies. In the main, it doesn't matter. Only when it comes to voting does it matter. The Chinese will vote for whatever candidate will benefit China. Mexicans vote for those who would benefit Mexico.