This kind of system is very easy to game or challenge. (((SJWs))) will manage it. You know that IQ tests will be considered racist, Somalis will be classified as Caucasian (they already are) etc.
How about we pay idiots NOT to breed? What a concept! It could be quite simple: Anyone who wants to go on the dole, for any reason, needs to be on birth control. Plus payments of $5000 to anyone who gets snipped. No questions asked. The laws would be non-discriminatory.
Druggies, and all the problems they bring, would be gone in a few generations. Population would decline but the decline would be in the r-selected portion which the puppetmasters use to undermine civil society.
If there is a plan to re-introduce the gold standard then a declining population would allow the mild inflation which bankers and economists crave. It would also help the environment, help ease the problems of job loss during the robopocalypse, restore healthy families, increase national IQ, etc. The left should love it, right? Oh wait, they want a worldwide favela shithole full of people who are dumb enough to vote for Communism over and over and over again. Idiocracy is the only way the Left can win, and they know it.
Doing something like this might be the only chance to make civic nationalism work in the long run.