You do realize that the "But they just can't be like us" argument has been used on nearly every minority ethnicity coming to the US - you can find similar diatribes against Italian and Irish migrants from the turn of the century before they became white.
No, actually. He used the same argument, siting some group that he thinks has successfully "assimilated" (assimilated is a rather colonialist notion anyway, and the "model minority" concept is hardly racially just) and some group(s) that he thinks can't or won't. But that same argument, well the X were here, but now the Y people just aren't like us and want to stay on their own has been used against the first generation(s) of nearly every immigration wave
