Trump’s mother was born in Scotland. You know that. So by your very flawed and incorrect definition, Trump was ineligible.
Fortunately you are always wrong when it comes to your incorrect assumption of who is eligible to run for president. Fortunately Trump ran and was elected.
Twice.
Trump’s mother was a US citizen when he was born.
A naturalized citizen cannot become President, but the children of naturalized citizen parents born after naturalization can.
Following this rule, Tiffany Trump is the only natural-born citizen child of President Trump eligible to run. Barron was born on March 20, 2006, and Melania Trump obtained her citizenship in July 2006. Ivana Trump obtained her citizenship four years after her last child was born.
-PJ