The experience of Donald Trump should be enough evidence so that never again do we allow a person with zero government experience to run for and win the Presidency.
In ideal terms, it would be good to have a constitutional amendment detailing what a President’s experience should be, but that is clearly never going to happen, and just passing a law would be declared unconstitutional.
But common sense and intelligence should make that a person to run for President should have to meet the following qualifications:
A Presidential candidate should have government service in elective office, including Governors, Mayors, US Senators, US Congressmen or appointed service, including being a Cabinet officer under one or more Presidents or have served in the US military, and reach a high level of rank in any branch of the armed forces of the United States.
However, also a requirement should be that a Presidential candidate must submit to psychological testing, as to his mental stability.
Additionally, any Presidential candidate must be required to submit full financial information for the previous 20 years, with no blocking of any information allowed.
IF these requirements are met, we would never again face the disaster of Donald Trump, a totally ignorant, uneducated, incompetent, and dangerous person to have control of the military and nuclear codes.
The point is that government is NOT a business, and so just being in business does not qualify one to be President of the United States!