There seems to be some confusion about who is eligible to be president. The Constitution says you have to be a natural-born citizen.
So, you have to be natural born and you have to be a citizen.
Everybody knows that natural childbirth involves being born at home with a midwife instead of a doctor. You should take Lamaze or Bradley classes first. Episiotomies and epidurals are not allowed, and C-sections are right out.
So, all of you people who were born in a hospital are just out of luck, presidency-wise.
Now, about citizenship. It really helps to have been born on American soil. If you want to be sure of presidential eligibility, it's best if you were born outside, on the ground.