What lead? The IG can’t investigate all those no longer in the DoJ/FBI. I don’t know actually what autonomy he has beyond what the IG reports—but I do know some avid, Trump-supporting attorneys were quite upset about this yesterday.
Why can he not investigate past government employees and what they did while in the government??? That really makes no sense. I am not saying you are wrong, but he is supposed to investigate wrongdoing in government....which means the past....just because someone leaves the government does not exonerate them.