“ It meant to them... Being born IN the USA by TWO citizen parents. And THAT is what they put in the constitution “natural born citizen”.
In other words Don Jr , Eric Trump or Barron Trump should never even consider running for president.
That is true as I don’t think their mother’s were a Citizen of any kind of the United States when those children were born. So they likely would have inherited also the Citizenship of their mother at/by their birth circumstance when those children were born in the USA.