We also practiced eugenics in the US on a small scale though forced sterilizations.

Unfortunately, the problem with tests is it's vary hard to measure the right things. And vary easy to end up with a Japanese style system where meaningless information becomes important simply by being on the test.

So, in the US we sterilized some people who had genuine genetic issues, but others because they where slightly below average and came from a poor background, or and others for being gay.