Article Two of the United States Constitution
Section 1: President and vice president
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. At the time of taking office, the President must be:
Article Two of the United States Constitution-22