...“Today we require tax returns, but what would be next? Five years of health records? A certified birth certificate?†Brown asked. “And will these requirements vary depending on which political party is in power?â€
The Constitution spells out requirements — a minimum age (35), US citizenship and 14 years of US residency — for presidents. And the Supreme Court has ruled, regarding congressional term limits, that states can’t set requirements for federal ballots beyond what’s in the Constitution....
That part actually should be a requirement, since it is not just citizenship that is required.
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.
ARTICLE II, SECTION 1, CLAUSE 5
https://www.heritage.org/constitution/#!/articles/2/essays/82/presidential-eligibility