This 'Blunt' is a repeat because sometimes you have to repeat things to get them across to people who are willfully ignorant. I'm not talking to you, because if you're reading The Political Carnival, you most likely understand that the United States of America is a country of immigrants. Your ancestors may have come hundreds of years ago on the Mayflower or as indentured servants from England or they might have become 'immigrants' when we invaded Mexico (yes 'we' - the United States), conquered territory by force, and the Spanish- and native-American-language who alreadylived there had to deal with the fact they were now citizens of a completely different country.
Right-wingers don't seem to want to know anything about the Mexican-American War but here's more about it if you'd like to refresh their memories. Mexican-American War.
I could easily continue but I think I will leave it at that and post this video (sorry for putting an image of Joe Arpaio on your computer screen):