No, they used to do IQ tests which were found discriminatory (and don't correlate with job performance). Tests and problems directly or indirectly related to the job are not only legal, but are commonly used (leetcode).

IQ tests are perfectly legal in US hiring, but you're right, they're not done because they don't work well.

Chicago police and fire had a lot of problems with their entrance exams and promotion exams. Don’t know if they were strictly IQ tests.