[tikhonj]

The US has a notion of "disparate impact"[1] that means you can be liable for discriminating based on a protected characteristic on the basis of correlation. This is why HR departments are very hesitant to use things like IQ tests for screening candidates, for example.

[1]: https://www.congress.gov/crs-product/IF13057

[tptacek]

If they are, they're falling for an urban myth, because IQ tests in white-collar employment are legally fine, and several household-name corporations use them openly. I'm a noodge about this particular issue because there's a folk belief that IQ tests are the secret perfect hiring mechanism; it wouldn't bother me so much if it was so obvious how badly a pure IQ-test process would perform for a job in our field.