Not only not fire him, Garland appointed him Special Counsel.
For Biden to say the prosecution of his son was politicized by his own DOJ is simply bizarre.
I'm going to try to have an honest conversation with you, for what little good it will do.
MOST ICs abuse their power. Doesn't matter if they are Republicans or Democrats or if they are investigating Republicans or Democrats.
Unlike regular prosecutors who have to prioritize which cases they are going to expend resources on (which is why most petty offenses get dismissed) an IC has unlimited resources to target someone, and they had better come up with something for all that trouble.
So Lawrence Walsh couldn't get North or Poindexter, much less Reagan, so instead he went after poor Cap Weinberger for not thinking his meeting notes constituted a diary. (And Cap was the one guy in the room saying trading weapons for hostages was a terrible idea.)
Or Ken Starr couldn't get Clinton on Whitewater, so he went after him for getting a Beej from Lewinsky.
Or Patrick Fitzgerald couldn't prove that the leak of Valerie Plame's name was retaliation- everyone involved was opposed to the war, just like her husband - so he went after Scooter Libby for not remembering a conversation the same way Tim Russert did.
If Hunter's case had been in the hands of regular prosecutors, they would have been satisfied that the gun was confiscated and the back taxes were paid. But only because he was the president's son and Weiss had unlimited resources to try to justify his existence did this thing go this far.
So like in all those other cases, the abuses of a Special Prosecutor/Independent Council had to be countered with a pardon.