ACB was asked by Durbin if a President can legally pardon himself in which she responded it was never tested.

Everyone assumed he was referring to Trump.

I suggest he was testing her because BHO did it.

It is a possible exlanation for why Barr came out so quick saying Biden and BHO will not be part of Durham's investigation.

If a secret pardon existed, it would have to be shown at the onset of an investigation in order to invoke it's power.