"there must be a lot of Catholic law schools where"

So says (Georgetown Law's) David Luban here  in explaining his voting in Leiter's recent survey concerning "which philosophers have had the most impact on legal scholarship."  Must there?   "I found myself placing Aristotle and Aquinas high on the list because there must be a lot of Catholic law schools where the Thomistic influence lingers even if the recent decades have seen their faculties become far more secular."  Please.  Why "must [must] there be" what by no reasonable account obtains at Luban's own nominally Catholic home institution?  Where are these sub silentio Thomists who "must" exist?  I would like to see the relevant data -- and be able to draw the conclusions.

UPDATE: Prof. Luban is on leave  "spring 2007".