From 1990 to 2000, the number of immigrants who went to California or New York declined from 51.3% to 36.6%.

Tyler Cowen attributes this to diminishing returns.

I would forward an alternative (and totally speculative) explanation that it's a reflection of immigrant communities in other states (esp. those in the southeast) acquiring a critical mass — enough resources, from religious institutions to ethnic grocers to colinguists, such that new arrivals face the prospect of joining a community rather than serving as pioneers.

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