>>Edward L. Glaeser is a professor of economics at Harvard University, a City Journal contributing editor, and a Manhattan Institute senior fellow.
Ah, yes. The Manhattan Institute. Why am I not surprised?
http://en.wikipedia.org/wiki/Manhattan_Institute_for_Policy_...
It's kind of funny how both economists you have cited so far can have their ideologies traced to some economically ultra-conservative think-tank. These are people who believe strongly in small government (in other words, are strongly political) and write countless articles that are anti-government spending so that they can "starve the beast."