? That's total nonsense.
Positions of power attract people who want to use that power for their own gain. They abuse it regularly, whether it's politics, enterprises or even charity.
To assume, that somehow wouldn't happen when you don't look is beyond absurd. Of course it does.
So I pointed explicitly at US intelligence agencies, because there corruption is rampant and oversight virtually non-existent, respectively itself involved in the corruption.
What you suppose there is a grotesque "don't ask don't tell"-complicity.
In reality, trust has to be earned and that deservingness has to be verified.