In 1988, Mark Tushnet noted the revival of grand theory in constitutional law. Tushnet was somewhat unusual in specifying the object of contemporary constitutional theory so precisely. As he noted, what had been revived in the late twentieth century was an interest in comprehensive normative theories of constitutional law. There was relatively little broad concern with constitutionalism in this revival, but quite a lot of concern with justifying and elaborating the preferred constitutional decisions of the Supreme Court in specific cases. Having just published a book on constitutional theory that I unsurprisingly but undoubtedly erroneously regard as the last word on the subject, Tushnet pronounced it time to start doing something el...