““and subject to the jurisdiction thereof” does not include people here illegally. Jurisdiction is not just about geography.”
From the landmark US Supreme Court decision in the case of United States v Wong Kim Ark, 169 US. 649 of 1898: “The fourteenth amendment affirms the ancient and fundamental rule of citizenship by birth within the territory, in the allegiance and under the protection of the country, including all children here born of resident aliens, with the exceptions or qualifications (as old as the rule itself) of children of foreign sovereigns or their ministers, or born on foreign public ships, or of enemies within and during a hostile occupation of part of our territory, and with the single additional exception of children of members of Indian tribes owing direct allegiance to their several tribes. The amendment, in clear words and in manifest intent, includes the children born within the territory of the United States of all other persons, of whatever race or color, domiciled within the United States.”