The most important reaction of the creditor interest to this course of legislation was its energetic part in bringing about the Philadelphia Convention. Closer, however, to our purpose is the leadership taken by the new federal judiciary in asserting the availability against predatory state legislation of extra-constitutional principles sounding in Natural Law. In 1795 Justice Paterson of the new Supreme Court admonished a Pennsylvania jury that to construe a certain state statute in a way to bring it into conflict with plaintiff's property rights would render it void. "Men," said he, "have a sense of property.... The preservation of property ... is a primary object of the social compact".[60] Three years later, Justice Chase proclaimed from the Supreme Bench itself, with characteristic emphasis, his rejection of the idea that state legislative power was absolute unless its authority was "expressly restrained" by the constitution of the State.[61] He too was thinking primarily of the rights of property.
To dicta such as these constantly accrued others of like tenor from various high state courts, the total of which had come to comprise prior to the War between the States an impressive body of coherent doctrine protective of vested rights but claiming little direct support from written constitutional texts. This indeed was its weakness. For the question early obtruded itself, whether judicial review could pretend to operate on a merely moral basis. Both the notion that the Constitution was an emanation from the sovereignty of the people, and the idea that judicial review was but a special aspect of normal judicial function, forbade the suggestion. It necessarily followed that unless judicial protection of the property right against legislative power was to be waived, it must be rested on some clause of the constitutional document; and, inasmuch as the due process clause and the equivalent law of the land clause of certain of the early state constitutions were the only constitutional provisions which specifically mentioned property, they were the ones selected for the purpose.
The absorptive powers of the law of the land clause, the precursor in the original state constitutions of the historically synonymous due process clause, was foreshadowed as early as 1819 in a dictum by Justice William Johnson of the United States Supreme Court:
