A law passed by Congress cannot change the Constitution, nor the meaning of any of it's terms. They must mean now what they meant when written. It would be up to a Court, probably the Supreme Court in the final analysis, to determine what that meaning was and is. Title 8, section 1401 and 1405 were passed under Congress power to define a uniform rule of Naturalization. Thus anyone who is a citizen, at birth or later, only because of those sections, or any other Congressional laws, must logically be a naturalized citizen. Congress has no power to create or define any other sort.
“Thus anyone who is a citizen, at birth or later, only because of those sections, or any other Congressional laws, must logically be a naturalized citizen.”
That’s a contradiction. Naturalization only happens *AFTER* birth. Birthright (’natural-born’) citizen and naturalized citizen are mutually exclusive.