After the Revolution, there were serious citizenship and property issues to be resolved as the population sorted themselves into American and Englishmen.
Article 9 of the Jay Treaty says that British subjects and their heirs who owned property in America were afforded the same legal rights as American citizens - but only in regards to property rights. And vice versa for Americans with property in Britain.
Leo has stretched that clause beyond recognition to support his Vattel centric view of citizenship.
Have you considered that relying on a rock star wannabe, professional poker player with no actual legal experience might be a root cause for the fact that no eligibility case has ever succeeded?
In what fantasy world does a freak like Leo Donofrio, Esq. qualify as a constitutional scholar? Can you actually show me that prior to jumping on the eligibility gravy train, that he actually practiced law? Any court records? Any publications?