No Person except a natural born Citizen, or a Citizen of the United States, at the time of the Adoption of this Constitution, shall be eligible to the Office of President; neither shall any person be eligible to that Office who shall not have attained to the Age of thirty five Years, and been fourteen Years a Resident within the United States.
There are three requirements of eligibility for the office of President of the United States. The same three requirements must be met for someone to hold the office of Vice President.
The term “natural born citizen” isn’t defined in the Constitution. The framers/founders adopted the term from The Law of Nations by Emmerich de Vattel; Book 1, Chapter 19, Section 212 Citizens and natives.
The term “natural born citizen” was defined by the US Supreme Court ruling in Minor v. Happersett (1875) as follows:
At common-law, with the nomenclature of which the framers of the Constitution were familiar, it was never doubted that all children born in a country of parents who were its citizens became themselves, upon their birth, citizens also. These were natives, or natural-born citizens, as distinguished from aliens or foreigners.
Dr. Herb Titus discusses “natural born citizenship” in a two-part video and how it relates to Article II Section I of the US Constitution.