Something else...see how easily this guy seems to accept the following study to come to the conclusion that the US is not an exceptional nation....regarding economic mobility:
“Perhaps the only legitimate use of the intergenerational correlation in income is to characterize economic mobility. The data challenge the notion that the United States is an exceptionally mobile society. If the United States stands out in comparison with other countries, it is in having a more static distribution of income across generations with fewer opportunities for advancement.
Anders Björklund of Stockholm University and Markus Jäntti of the University of Tampere in Finland, for example, find more economic mobility in Sweden than in the United States. Only South Africa and Britain have as little mobility across generations as the United States.”
http://www.j-bradford-delong.net/movable_type/refs/Mozilla_Scrapbook/2002-11-15-krueger.html
Where is his BALANCE with regard to citing studies that prove exactly the opposite?
He's like Al Gore in that regard, once he is firmly entrenched in a theory he refuses to even acknowledge dissent to those views it appears.