Still no clear answer for what "you" would like to do to stop the invasion? All of South America, Central America, the Island nations were all taken over and the inhabitants slaughtered and raped. Now North America is being invaded. There is no end to human "migration" for power and greed. It will all be ruined in the end to look like the rest. I myself would suggest forced human contraception in the water or something. People are still having a dozen kids. A war of attrition by numbers. I think it may be too late. The only other options are walls. The USA is already to most diverse on Earth. That's not the problem. The problem is too much of a good thing will ruin the rest.