If Stix is correct, I think he misses the point. It isn't the immigration issue that incenses most conservatives these days, it is the strident anti-imperialist rhetoric of writers such as Buchanan, Roberts, and Francis. Whatever nice things you may say about Michelle Malkin or Ann Coulter, who both support immigration restrictions, they are unabashed supporters of the Warfare State.
Stix is correct that our elite doesn't want an open discussion of the immigration issue, as they are the only one's that benefit from an open-borders policy (as I have written elsewhere). But the Jacobins on the political Right are much less willing to entertain critiques of America's messianic foreign policy.