There is also no guarantee that the people you hire do not have criminal or psychological issues because these things are not checked or shared internationally. For example, a woman in my college got killed by a foreign PhD student because she rejected his romantic advances. I also find people can have high degrees of education on paper but hold beliefs that seem more aligned with people in the 50’s. I don’t want to work with people who think yelling and obeying the boss blindly is appropriate.