"You can stop something that hasn't been completed, but you can't take back a pardon that's been completed," Crouch said. "And the Hunter Biden language in the pardon suggests any and all federal offenses is pretty broad and there's no taking that back."

Trump's team was pointed to President Joe Biden's pardon of his son, saying it showed that Trump's "promise to end the weaponization of our justice system needs to happen."

President Biden granted blanket clemency to stop his son from being prosecuted by the Trump administration for his foreign business. Experts reached for historical parallels.