The Supreme Court disagrees with you.
It should also be noted that under Article 1, Section 8, Clause 4 of the U.S. Constitution, Congress has authority to create law regarding naturalization which includes citizenship.
So now we know that Congress, under the 14th Amendment, can write legislation declaring what constitutes a natural-born citizen. We also know that under the very first acts of Congress, executed by the very founders who wrote the Constitution, that Congress had the power to define NBC status and the method of obtaining NBC status. Under that act, we see that the founders specifically established the precedent that a NBC can be born 1) outside the boundaries of the US and 2) to one US citizen parent.
In the case Minor v. Happersett (1875), the court ruled, “The Constitution does not in words say who shall be natural-born citizens. Resort must be had elsewhere to ascertain that.”
Though the Constitution is vague in what constitutes a natural-born citizen, Congress has stepped in to attempt to fill in the gap. Under Title 8 of the U.S. Code, Section 1401 defines the following as citizens of the United States upon birth… or natural-born citizens:
Anyone born inside the United States. The person must be “subject to the jurisdiction” of the United States. (This would exempt the child of a diplomat, for example, from this provision.)
Any Indian or Eskimo born in the United States, provided being a citizen of the U.S. does not impair the person’s status as a citizen of the tribe
Anyone born outside the United States, both of whose parents are citizens of the U.S., as long as one parent has lived in the U.S.
Anyone born outside the United States, if one parent is a citizen and lived in the U.S. for at least one year and the other parent is a U.S. national
Anyone born in a U.S. possession, if one parent is a citizen and lived in the U.S. for at least one year
Anyone found in the U.S. under the age of five, whose parentage cannot be determined, as long as proof of non-citizenship is not provided by age 21
Anyone born outside the United States, if one parent is an alien and as long as the other parent is a citizen of the U.S. who lived in the U.S. for at least five years (with military and diplomatic service included in this time)
That is the current state of the laws of this nation. Disagree with it if you want. Clench your fist and shake your fist with all the gusto you can muster if you care to. But that is the law. If you don’t like, vote in those that can change it.