
I don’t think there’s any way to create a standardized intelligence test that won’t both be vulnerable to exploitation and bias and won’t disproportionately harm historically oppressed communities (which usually have less education access, may speak a different dialect of English, or may not speak English at all).
You certainly don’t need to speak English to be intelligent, but the fair application of an intelligence test would either require someone to be able to take it in English to the same level as a native English speaker, or would require an availability of tests and test-givers in other languages that could provide the same quality and standards as the English-language tests, which would be difficult.
Think about how much harder it would be to create and provide Tagalog-language tests while applying the same standard as an English-language test. There’s also just no really good way to test overall intelligence, and intelligence in math or literature doesn’t mean someone is politically competent.
It would be extremely difficult to provide tests in every language a US citizen might speak to the same standard as English language tests. There’s also no reason that the kind of intelligence that could be tested on a sheet of paper would correlate to someone being politically intelligent. Someone could be good at math or know a lot about books and be extremely gullible.