Wouldn't that eliminate Senator Cruz then, given that in your opinion he isn't a natural born citizen?
The definition that I understood for "natural born citizen" would have precluded Cruz, due to birth outside the US.
When George Romney ran in 1968, a legal opinion was written for the Congress, which concluded he was NOT eligible, because he was born in Mexico, although to US citizen parents. It didn't matter, because Romney dropped out, and many other issues and topics dominated politics and the news that year.
When all the controversy arose over Obama, mention of McCain arose, and the bill passed to deem him eligible.
McCain was born in an hospital in Panama while his Navy father served there. It was tantamount to declaring the location of a hospital and the father's service, were equivalent to a diplomatic situation.
The historical determination was either born in the US, or if born abroad must be diplomatic status.
Following that interpretation Cruz would NOT be eligible, but Rubio and Obama would be eligible.