That used to be exactly the case. They changed the laws since then since each president would fire everyone and replace them with his own people. Now you have t

That used to be exactly the case. They changed the laws since then since each president would fire everyone and replace them with his own people. Now you have to be hired for merit and can't be fired for political affiliation. This is the "Civil Service". Restructuring an agency(and removing the positions) is different from replacing people, though. I'm sure there's something that could be done.