Problem is, we live in the 21st century of globalization. Plus we got a whole generation of half-breeds walking around the developed world, some areas where they outnumber the whites and the full blooded blacks (Germany, for example). Its a little too late for Separation, especially when other first world countries done better than us in that social compartment. Besides, the educated whites here in America and the whites in Europe have super-low birthrates. By 2100 AD, they only make up 1% of the world's population. They are on the verge of extinction, anyway.