So you haven't read his Wikipedia page then, and you are too young, I guess, to remember Iran-Contra. You apparently don't even remember how Barr got the job from Trump.
It’s just the math of the city. The DOJ is more democrat-leaning than most college campuses: https://admin.govexec.com/media/general/2024/11/110124donati.... Trump got three times the level of support in AOC’s district than his share of donations from DOJ employees.