Dan Bongino postulates that the entire Mueller probe was never going to be about “collusion” but was intended from the start to be about “obstruction”.
In his opinion (and there may be some creedence to it) collusion would be a “black and white” issue...there is either proof of collusion, or there isn’t. In his words, like a bank robbery, the bank was either robbed or it wasn’t.
Obstruction is a judgement call.
Mueller said Trump did not obstruct his investigation.
Any other form of obstruction requires evidence of a crime. There is no crime. What exactly was obstructed?