Friendly reminder that John Eastman, among a small group of others affiliated with a particular think tank, continues to make this argument in the face of conclusive counter-arguments and counter-evidence (linked below) that he either continues to ignore or refuses to address. https://twitter.com/DrJohnEastman/status/1293541246489649154

Akhil Amar covered much of the relevant evidence in a Nov. 2018 @ConstitutionCtr debate. As he says at the outset, Eastman's understanding of "natural-born citizen" is rejected by scholars left, right, and center. https://constitutioncenter.org/interactive-constitution/podcast/does-the-constitution-require-birthright-citizenship

If you don't want to listen to a podcast, Eugene Volokh covered much of the same ground in this recent piece. https://reason.com/2020/08/10/yes-kamala-harris-is-indeed-a-natural-born-citizen/

And to back up the claim that Eastman (and Michael Anton and Edward Erler...) has been wrong for some time, here's @jadler1969's piece from July 2018. https://reason.com/2018/07/19/a-bad-argument-on-birthright-citizenship/