The wives of the presidents cited were citizens automatically by marriage under the now obsolete law in force at the time.
Chester Arther's father was axiomatically a man so he couldn't benefit from this law.
Its Arthur's father that is the issue: he was not yet a naturalised citizen by the time of Arthur's birth. Barack Obama Snr could never have been made a citizen by marriage, so I have no clue what you meen.
Emerich de Vattel never wrote of either "natural born citizen" or "natural-born citizen"...he wrote in French and used the term indigènes! If you want to translate that into "natural-born citizen" then that's your right, but it doesn't make it so. Proof by Definition isn't valid.
In fact, it was only later translations of The Law of Nations that had the mistranslation to "natural-born citizens"--not the edition with which John Jay and the others were familiar when writing the Constitution. Everyone knows that the Colonials were unable to catch H.G. Wells and his time machine from the British, so that's not possible and we'll have to assume that they were relying upon the usual definition of natural born citizen--a citizen by birth, not the process of...get it..."naturalization"...
Secondly, I thought that Donofrio was into the idea that Chester A. Arthur was not an American citizen, but was a British subject--despite being born in Vermont. Do you agree that Chester A. Arthur was not an American citizen?
Remember how Jefferson's citizenship statute in Virginia gave automatic citizenship to all white persons born there...?
Its Arthur's father that is the issue: he was not yet a naturalised citizen by the time of Arthur's birth. Barack Obama Snr could never have been made a citizen by marriage, so I have no clue what you meen.
I never said Barack Obama, Sr., was a citizen by marriage.