Andrew Jackson served as the 7th President of the U.S. He was born in 1767. His parents immigrated from Ireland in 1765. Given your interpretation of “Natural Born Citizen”, was he eligible to be President?
Yes, Jackson, like the British West Indies born Alexander Hamilton, was eligible. Both were grandfathered in by this phrase “or a Citizen of the United States, at the time of the Adoption of this Constitution,...”. After the adoption of the constitution neither would have been eligible under the identical scenario.