"The Cognitively Illiberal State"

Prof. Dan Kahan has a new paper, "The Cognitively Illiberal State," which should be of interest to MOJ readers.  Here is the abstract:

Ought implies can. This paper investigates whether the central moral directives of liberalism are ones citizens can - as matter of human cognition - be expected to honor. Liberalism obliges the state to disclaim a moral orthodoxy and instead premise legal obligation on secular grounds accessible to persons of diverse cultural persuasions. Studies of the phenomenon of cultural cognition, however, suggest that individuals naturally impute socially harmful consequences to behavior that defies their moral norms. As a result, they are impelled to repress morally deviant behavior even when they honestly perceive themselves to be motivated only by the secular good of harm prevention. The paper identifies how this dynamic transforms seemingly instrumental debates over environmental regulation, public health, economic policy, and crime control into polarizing forms of illiberal status competition. It also proposes a counterintuitive remedy: rather than attempt to cleanse the law of culturally partisan meanings--the discourse strategy associated with the liberal norm of public reason--lawmakers should endeavor to infuse it with a surfeit of meanings capable of affirming a wide range of competing worldviews simultaneously.

Kahan's conclusion -- i.e., that we ought not to pretend we can "cleanse the law of culturally partisan meanings" -- seems right to me, as does his descriptive claim that "liberalism" cannot -- "public reason" arguments notwithstanding -- be regarded as a morally neutral project.  I wonder, though . . . is the reason why Kahan is right just because "[s]tudies of the phenomenon of cultural cognition . . . suggest that individuals naturally impute socially harmful consequences to behavior that defies their moral norms"?  Yes, perhaps we do.  But, isn't the reason why there is no point in cleansing law of "culturally partisan meanings" because, in fact, the enterprise of law is inescapably a moral one?