Should people have to undergo a psychological test before they are granted high responsibility jobs?

Fromdusktilldawn
Should there be a global law that says people have to undergo a psychological survey/test before they are granted a position of high responsibility (like president of a country, manager of a huge company etc). To avoid tyrannic and greedy capitalists who only seek power and their own profit.
What fo you think?
Should people have to undergo a psychological test before they are granted high responsibility jobs?
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