[This_far]

I don’t buy this argument. He is his mother’s son. She is a US citizen.

She was not old enough at the time of giving birth to convey NB status.

[Anitius Severinus Boethius]

She was not old enough at the time of giving birth to convey NB status.

That restriction(the time spent living in the U.S. after 18 clause) only applied to a naturalized citizen and not to a natural born citizen as his mother was.