I’ve seen that piece of shoddy works being cited dozens of times, and it remains unbelievable how anyone could entertain it as a serious work for one moment of time. For example, the authors state:
“Indeed, John Jay’s own children were born abroad while he served on diplomatic assignments, and it would be absurd to conclude that Jay proposed to exclude his own children, as foreigners of dubious loyalty, from presidential eligibility.”
Evidently these creatures at Harvard Law School never heard about the exception for diplomats and their families, which meant those children they are talking about were not born under the local duty of allegiance to the French Crown and were instead under the legal category of Foreigners. Being under the status of diplomats in the service of the United States, the children of John Jay retained their sole allegiance to the sovereignty of the United States of America, which was the fundamental purpose of the natural born citizen clause and its implementation.