[Lurking Libertarian]

So, you’re assuming Barry’s father is Frank Marshall Davis, and this is recorded in legitimate vital records somewhere? That is the only possible relevance of your highly theoretical discussion. But then, how do you explain his claim to be the son of a British subject? Are you saying Barry is a liar?

No, I'm assuming the fact that he has some African ancestry, as shown by his skin color. Under Dred Scott, that would mean that he couldn't be a U.S. citizen of any kind. Dred Scott was overruled by the 14th Amendment.

[Plummz]

You seem to be mistaken concerning both Dred Scott and Amendment XIV.

Dred Scott applied to descendants of Africans brought over in slavery and under U.S. jurisdiction; not to the sons of British nationals visiting on a student visa.

Amendment XIV did not amend the qualifications necessary to serve as President, as laid out in Section 2.

Hope this helps.