Not only that, he pardoned him for any act over the last ten years, meaning his fleecing of foreign companies - without claiming the payments as income - are covered, both those exposed and those remaining hidden.
That being said, Biden and his brother are now exposed, as Hunter no longer has Fifth Amendment protections against self-incrimination; however, any perjury by Biden that is connected to future investigations of the Bidens wouldn't be covered, in my view.
He may yet get his...