You are talking about a U.S. State Department administrative rule for its Bureau of Consular Affairs codified in the Foreign Affairs Manual (Volume 7), not a law passed by Congress and signed by a president.
Which STILL Cannot change the meaning of words in the US Constitution. Only an Amendment can do that.
Since I referred you to the FAM, I have also found (via another FReeper) the SCOTUS decision in Rogers v. Bellei which refutes the claim that "(...) no court decision has ever separated natural born citizens from citizens of the United States at birth." If you are interested in that decision, please see my post at #358.