That's incorrect. Neither of my parents were US citizens when I was born, but they were in the country legally. I am a US citizen by birth. I was never naturalized. Same holds true for Harris. Her parents were in the country legally, so by virtue of being born in the US, she is a US citizen by birth. She also is not an anchor baby. Anchor babies are those born in the US to a parent who is in the country illegally.
You are not a natural born citizen and neither is she
There were different laws in place regarding citizenship when she was born and wht was necessary for her to be a natural orn citizen, and those qualifications were not there