In Elk v. Wilkins, 112 U.S. 94, the court was specifically asked to address “subject to the jurisdiction thereof,” and held it meant:<quoted text>
UR going in circles.
Birfoon: "sorry, the Constitution makes citizens now."
The persons declared to be citizens are “all persons born or naturalized in the United States, and subject to the jurisdiction thereof.” The evident meaning of these last words is not merely subject in some respect or degree to the jurisdiction of the United States, but completely subject to their political jurisdiction and owing them (U.S.) direct and immediate allegiance. And the words relate to the time of birth in the one case, as they do to the time of naturalization in the other. Persons not thus subject to the jurisdiction of the United States at the time of birth cannot become so afterwards except by being naturalized, either individually, as by proceedings under the naturalization acts, or collectively, as by the force of a treaty by which foreign territory is acquired.
Obama was born a citizen of his father's nation a fact you can't change.