Earlier quoted context omitted.
> It is illegal discrimination to make hiring decisions based on IQ scores. You can only use a test that shows those with higher scores perform better at the job. There is more scientific evidence that IQ predicts job performance than for most of the more qualitative criterions that employers use in practice. The source of the illegality of using IQ tests is not legislative (intelligence is not a protected class[1]).…
Reading the Wikipedia link on Griggs it seems to have been about requiring a high school diploma for jobs that didn't need that as a way of keeping blacks out. That seems a different matter to wanting to hire intelligent people to programme?
> The Supreme Court ruled that under Title VII of the Civil Rights Act, if such tests disparately impact ethnic minority groups, businesses must demonstrate that such tests are "reasonably related" to the job for which the test is required.
For programmers (as well as many other jobs), IQ (within a certain range) could be borne out as being reasonably related. GP was claiming that it is illegal to administer IQ tests during interviews in the US, which is not true.