I get why anyone would be upset he doesn't go after him. It pisses me off. I want to see Trump rot. I also see the point of view that he doesn't want to escalate the tensions between Americans. Going forward with doing shit to Trump could just erupt into more violence and shit. Let the states go after him. I think Joe getting directly involved could end up badly.
Bingo. Plus, why would he want to give Donald Trump more attention? Let the State of NY and others widdle into him nothingness. If the DOJ has a reason to seek him out, they will. The DOJ is not Biden's command squad.