He had zero official capacity to interfere and stop Bidens certification and yet his lawyers and aids are testifying to it and now being held criminally liable. If his administration was acting in an official capacity they had nothing to fear and yet they all requested pardons. Nixon was also liable for much much less attacks on his opponents and only pardoned after the event.
There is no precedent for blanket immunity otherwise you have an unfettered Monarch as head of state.
