Because he’s in on it . He would have done the same if he was in Comeys place at that time
All these as actors are now gone. Not much Wray can do but move forward.
Definitely in on it. Enthusiastic supporter of all actions taken.
But.................it all happened under Comey’s watch and he can point all his fingers at him. Then defer everything else to Mueller, Rosenstein, and the DOJ.
Although, we all know he’s as dirty as the day is long, his hands are clean.