IQ, income, education, crime rate, school achievement, quite literally every possible measure that you would expect to correlate with intelligence also correlates with race. This occurs even when you control for factors like income. The myth and the lie that there is no link is often said and never shown. The evidence is overwhelming and the burden of rejection is on the deniers at this point.

Where's the evidence that IQ tests are biased? They're supposed to estimate the g-factor. I'm sure that if they were biased estimates of the g-factor they'd be recalibrated ASAP to estimate it in an unbiased way.