Christ is risen!
It was the hierarchy of the canonical Greek Archdiocese of North and South America (Ecumenical Patriarchate), which had a policy, several decades ago, of forbidding racially mixed marriages (this according to a priest who had written one of those "xx Questions on the Orthodox Church" books published in those days). Granted, the policy seems to have been retired or at least kept quiet, since then.
Those of you who want Br. Nathanael silenced or defrocked, are you saying that you also wish the bishops of the canonical Greek Orthodox Church in America to be silenced or defrocked? Or is what's good for the goose, not good for the gander?
The idea of a white Christian political bloc, and advocating for its strengthening, seems non-heretical and to be distinct from actual heresy. After all, if people from a group of African nations got together and said, "We want to formulate a powerful political bloc of African nations, to protect our peoples against inroads from European powers," absolutely no one would object. Even if it were an Islamic political bloc, with Islamist goals, few would object to their right to associate and organize to protect their interests, however ethnically and religiously narrow.
Being against "mixing of races" is a very unsound concept which has no basis ("race" as in "white" versus "judaic" versus "black" doesn't really exist, scientifically speaking, plus there is no previous example for this in the lives of the Saints or in historic church policy, short of Greek Orthodox American policy recently). I am very much against such talk and it is very disturbing to me. I have a number of racially mixed couples in my own parish of Holy Protection in Austin, Texas. http://www.orthodoxaustin.org