Some interesting background:
http://www.freerepublic.com/focus/chat/3381880/posts?page=41#41
follow the comments to the end of the page.
The original idea become a horse to ride... nothing more. At some point in time total racial diversity might have been a construct people believed in... but today? It's an excuse to move cheap labor in among useful idiots. If the ideas WAS true elites would be marrying off their daughters to people from all over the world. That's not happening.