Sorry, but the preamble is changeable, and it has not been changed. As the purpose statement, the 14th amendment must be seen in the preamble’s light.
The preamble extends the blessings of liberty to our posterity. The 14th amendment does not specifically exclude the unborn, and since the preamble sees the future as present, and since they are anticipated citizens, then they cannot be deprived of life.
All persons born or naturalized in the United States and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.
Sure looks like the 14A (the only substantive law on the subject in the Constitution) is pretty well limited to citizens "born or naturalized in the United States."
You can try to argue from the Preamble, but never, ever has the Preamble been considered substantive law. As such, you are simply spinning your wheels.
Correct