Yes Buchanan, politically is irrelevant. However my issue here is that he doesn't have to drag down responsible people with it. You might be right in that no one will associate Buchanan with the GOP. I certainly hope so.
But there's a bigger issue - and that's the BS known as race. Why not have a country where the majority is above 6ft tall? Or majority of people with blood type A+? It's only because power-mad people have used race to divide people for so long to put themselves in positions of power that issues of white-majority/non-white majority is even relevant to discuss.
Race, as a biological concept, is patent BS. Its only purpose it to entrench and maintain power.
The issue is not race it is culture. Many of the new immigrants coming to America have cultures that make assimilation into America difficult or impossible. Your mistake is believing that most of today’s immigrants readily mix with the dominant American culture. They don't. And if they have little desire to become American, conflict becomes inevitable.