Answer:
vacancy remains for a time, which is bad for governance of an important department
Step-by-step explanation:
After the president fires his appointee from office, the whole process of appointment starts.
The bureaucracy is too long thereby making the office lack proper governorship for a while.
This leads to low delivery which is undesirable for any president.
Changing of leadership of office causes a stir in the operations of the office due to the need to reorganize and adapt.