A Google search on “IQ test” and “hiring”? This isn’t rocket science. The first result is from Harvard Business Review.
I know the narrative you are trying to make. “Smart guys like me used to be able to get plum jobs right out of college with IQ tests, until the blacks ruined it for everyone by getting them banned.”
But it’s not true. Smart white guys used to be able to get plum jobs out of college because women and minorities were systematically excluded from good jobs. That must have been really nice for a young white guy. Now people have to compete on a level-ish playing field, and yes, things got a LOT more competitive for everyone.