Unforunately that's not how government (or any large institution) works. That person has enough political capital to hold onto that job, or probably they wouldn

Unforunately that's not how government (or any large institution) works. That person has enough political capital to hold onto that job, or probably they wouldn't have obtained the job in the first place. Try firing or moving them and you might find that someone powerful, whose good will you need in order to get important things done, will be unhappy with you.