In a subsequent post, he theorizes that allowing more immigrants in the US would be good for the housing market. Makes sense to me, although I can already see the hysterical headlines:
"Data show that, on net, immigrants expand the U.S. economy’s productive capacity, stimulate investment, and promote specialization that in the long run boosts productivity. Consistent with previous research, there is no evidence that these effects take place at the expense of jobs for workers born in the United States."
Foreigner Demand for Houses Pushes Out Americans!