Kerry Howley knocks GNP's nationalist impulses:

You can't really get through Grand New Party without feeling that anyone who lacks an American passport is an enemy to this vision. We know that it's possible to dredge up a few votes by blaming entrenched native-born poverty on Mexican laborers. Nor is it hard to convince (otherwise) educated Americans that the rise of a Chinese and Indian middle class is a catastrophe rather than an unprecedented increase in human welfare. This is a politics of exclusion, and we are tribal beings.

Reihan tries to parry the attack. Wilkinson and Larison are having a debate on similar grounds.