Leo Donofrio, Esq. has a different take on the British common law as it relates to the US Constitution:
There is a fundamental distinction between natural law in the international community, and natural law under the English common law.
Our Constitution forbids the establishment of religion, while respecting the rights of all persons to worship God or nature as they like. The English common law is in direct polar opposition to our Constitution, in that infidels were considered enemies of the state. In Calvins Case, which is universally recognized as having established the English common law with regard to the jus soli rule, the decision makes it perfectly clear that the English common law presumed infidels would never be converted to Christianity, and it specifically states that they are subjects of devils.
Hence, one could be born on English soil, in the Kings castle even, to parents who loved the King, but if the parents werent Christian, they could not be natural-born subjects. Instead, they were considered enemies of the King, because they refused to believe that the King was Gods monarch on Earth. This is not natural law to anyone who wasnt Christian.
The English common laws uniquely Christian definition of natural law governs the English common law concept of natural subjection/natural allegiance. And that is why the English common law definition of natural-born subject can never be judicially recognized as synonymous with natural-born citizen. Such a construction of Article 2, Section 1, would be directly repugnant to the 1st Amendment.
Also, I cannot find the term natural born anywhere in the 14th amendment. Can you point it out to me?