She was born in South Carolina.
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Jus soli is not enough
Documentation or reference?!?
Here are some references that explain the term, natural born citizen:
Natural born citizen
On the Meaning of “Natural Born Citizen”
Natural-born-citizen clause (United States)
Qualifications for President and the “Natural Born” Citizenship Eligibility Requirement
Chapter 3 - U.S. Citizens at Birth (INA 301 and 309)
In the United States, what is a Natural Born Citizen?