He's complicit. If Hillary were at all investigated, it would reveal how deep the corruption of the Pay to Play Clinton foundation goes; which, in turn, would expose how involved the then-senate, house of representatives, and highly-placed bureaucrats were compromised… and given that the Senate committed Treason in broad daylight [the Iran Deal
], it's literally a matter of life and death for Sessions [who voted yea for the Iran Deal] to keep anything from happening.
Right here. This post. Best summary yet.