Nah man. They are. Mexican immigrants are American. I used to proudly open a talk with something similar to "I'm proud of this country for many reasons but most of all because of the concept what an American is. Few countries will give you a title with citizenship. Indian and become a citizen? Boom, you're American. Immigrate from America to Haiti and you won't be Haitian. You can't become an Italian. But anyone can be an American" I've since refined and now recently rescinded most of those ideas but the core concept holds. A Chinese American waving a Chinese flag is just as American as a white man waving the American flag. It's great because you can love your home country, others home countries, and your current country (USA) at the same time because it's a melting pot that was founded by (not originally inhabited by. We can get into that later) immigrants with the eventual promise of opportunity for any others. Wave that Mexican flag. Scream that the US shouldn't even deport anybody. You're an American and everyone gets a say and you wouldn't be waving another flag here if you didn't love two countries. Or at least, the people in them.