James Madison is not only famous for his insistence that the Constitution derives its authoritative principles from the Declaration, but also for his oft-repeated statement that “all power in just & free Govt is derived from compact.” Madison undoubtedly regarded the Declaration as the quintessential example of social compact where citizenship was based on the consent of each individual who chose to enter civil society for the equal protection of equal rights.Pre-Amendment citizenship law.
Before the adoption of the Fourteenth Amendment, the antebellum United States generally embraced the common-law doctrine of citizenship by birth within the country.
Before the 14th amendment citizenship, its requirements, and its definition were left to the states.
Thus social compact, not jus solis, was the new basis for citizenship.