If you're suggesting Trump should know on an individual basis, that's absurd. But, there are obviously many ways of knowing if someone was a DEI hire...if they were hired by DEI enforcement personnel, if they were hired in order to meet a quota, or if their description demanded a certain number of traits for consideration, if their position required test results or experience they failed to meet or lack, but were hired anyway, if they were hired within a window of time, if there were clauses put in to protect their position based on racial or sexual identities, etc etc etc
Take the female lesbian helicopter pilot that caused the DC crash. She was grossly underqualified....only 500 hours of flight experience....flying at the wring altitude, and either disobeyed or was incompetent in not following instruction.... and it cost 70 lives. Can we "prove" she was a DEI hire? Or is it merely a coincidence that a female, democrat lesbian pilot lacking the flight time training to be in control caused such a tragic accident. The delta pilot who just crashed...another female. And gee, a few years back, there was a deliberate push to get more pilots of people of color as pilots as the field was full of too many white men. Need I go on?