[DiogenesLamp]

There is nothing intrinsic about being in national airspace that would confer citizenship on a child born in an airplane, either. For instance, if it were an Air France flight, the interior of the aircraft would be French territory. The woman wouldn't enter the US until she landed there and cleared customs.

So it is the Landing that would confer citizenship? What is the child before landing? In limbo?

This argument dovetails with the Abortion argument. There are those who are fond of legal technicalities that argue a child doesn't exist as a person till it exits it's mother. How do Freepers feel about THAT argument. I dare say most won't agree with it in regards to personhood, are fine with advocating it for citizenship.

[NonZeroSum]

So it is the Landing that would confer citizenship?

No.

What is the child before landing? In limbo?

No, the child is the same citizenship as the mother, or a citizen of whatever country the airliner is from, depending on that nation's laws. If it were an American aircraft, it might be considered an American citizen, even if it occurred in another country's air space. Landing would change nothing.