Were they “born in the jurisdiction of the United States?”
Probably not. The Constitution in plain language talks about “the exclusive legislative jurisdiction” of the United States.(Federal).
It amounts to the ten square miles ceded by the states for the seat of government and all fortresses, docks, territories, etc.
That’s what it means to be “born under the jurisdiction” of the United States.
They AIN’T citizens.
I fear no cigar on this one.