Trump supporters need to find and help MAGA candidates run as Reps and closet Dems for 2020.
The AG has that power. The DAG works directly for him. The AG probably talks to POTUS every day.
The vast majority of decisions and work in the Exec Branch are not done by POTUS or the heads of department/agencies. They're far too busy with the most important stuff not stupid little shit like who fills lower level positions.