Barr says he does not expect criminal probe of Obama or Biden
Now Trump, through Barr, is setting the terms. He's saying to the Deep State: I won't go after Obama or Biden criminally. I'll expose them, but not prosecute. I'll beat Biden to a bloody pulp (politically, in the election) but I won't prosecute him and I won't prosecute Obama. Everyone else who participated is fair game.
That's the last peace offer the Deep State gets. They can stop the BS and have a fair 2020 election for all the marbles (and likely lose because Biden is both pathetic and compromised in Obamagate), but have their two major leadership figures left with freedom if not reputations intact... OR, the Deep State can fight dirty, tooth and nail, bring another impeachment right before the election or whatever else they plan to do. And if they choose to fight dirty, Trump withdraws the offer of protection, leaving Obama and Biden to face the legal consequences of their actions if (when) he wins in 2020.
It would be very disappointing for Obama and Biden to escape consequences. But remember that Barr is speaking hypothetically here. He doesn't "expect" either of them to face a criminal investigation or charges. That can change.
UPDATE: Similar thoughts.