The videos of Hunter alone are enough to throw him in jail. There's two possible explanations why he's not in jail: 1) the GOP lacks the stones to do what's right, or 2) if they do jail Hunter, Daddy will issue an executive pardon. Does that bring in double jeopardy into play? If so, wait until Trump win the Presidency and then throw both their sorry a$$es in jail.
Biden has no authority to pardon state/local convictions. Start there first. He has to have broken a few dozen of those.