Hunter is most likely going to walk for good reason. What he was charged with are unconditional laws. If he walks, so will Trump. And that's assuming you can pin Trump with unlawful use first.
DOJ knows they are getting crushed with Hunter. Even 2A orgs offered legal help to him. They know the laws can't be upheld by an honest judge. So why hit Trump with the same charges that they're losing their shit over with Hunter?