Forget the 14th Amendment. Here's a foolproof solution to keeping Trump from running again:

[melm00se]

29. I am with you on this

the Constitution is quite clear on the requirements to be 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. - Article II section 1

Any additional requirements would almost certainly require a Constitutional amendment as any law made can be a law undone by a future Congress and president and/or overturned by the Supreme Court.

This is the reason that things like:
Slavery
Income taxes
Women's suffrage
Poll taxes
were all done via amendments because that move along put the issue beyond the reach of Congress or the Supreme Court.