Jason Richwine calculated the Wechsler Digit Span IQ subtest scores for different immigrant groups from it, but nobody has yet published the IQ scores from the four Woodcock-Johnson III IQ subtests given to 3 to 12 year-old children of immigrants with legal permanent residency in the NIS.
You'd have to be careful in evaluating the scores, since on most of the subtests, between 25-50% of the kids got scores of zero right out of up to 76 points. Presumably, they were utterly defeated by language problems due to the Woodcock-Johnson IQ test not having been translated into their exotic languages. The zeroes should be left out. (In contrast, the very simple Wechsler Digit Span subtest was translated into a huge number of languages. One immigrant's child took it in Amharic.)
However, 704 of the Woodcock-Johnson tests were given in Spanish, so those scores are probably more or less fair. And they're the most important ones for understanding the impact of massive Hispanic immigration on America's future.
And you'd also need to work on how to convert Woodcock-Johnson scores to IQ scores.
It would be an ambitious project, but a significant one.