Let's see the birth certificate.

I’m honestly not sure how that would apply to infant adoptions. It’s my understanding that if the adoption occurs early enough, the adoptive parents will be listed on the birth certificate. It certainly feels like a child adopted in infancy by citizens should be just as eligible for the presidency as a child naturally born to citizens, but I’d also have a hard time drawing a line age-wise after which that would no longer apply and I do see a reason to bar children adopted at 17 from the presidency. My niece was adopted at three years old and she does remember her biological mother, but she’s absolutely my sister and brother in law’s daughter, in terms of her personality, culture, and values. That’s only a data point of one and I’d like more, but I don’t know how easy that would be to track for other adopted children.

Well, he could just show his birth certificate, right?