Noam Scheiber tries to make that case in The New Republic. It's the kind of article that will get academic overachievers all excited, in that it makes the choice of which institution one attends seem really important, but I personally found the argument very weak. (To pick just one problem, correlation doesn't imply causation: I would think that the basic personalities of the two men were set long before they enrolled in law school.)

  UPDATE: Here's my favorite comment on the article from the TNR thread:

As a lawyer who went to a state law school but practices with lawyers from both Harvard and Yale, I can say that graduates of both law schools have their heads up their asses, but Harvard lawyers less so.