Natural born means born a citizen. Cruz was born a US citizen. Do you reject that a baby born to a US military family at a German hospital is not a natural born citizen? Do you believe a baby born to a US mother on an airliner flying over Canada from Green bay to Boston is not a natural born US citizen? A couple having dinner just across the border in Mexico when the baby comes..... Numerous similar scenarios shows how cut and dry both the logic and law interpretation is. Heck, technically, the first several US Presidents were not US born.
A loving ISIS couple flies to the US, just so she can spit the kid, and quickly returns to Dirtholistan.
Ya gotcher candidate right there.