At this point he wouldn’t get through the Senate.
There is only one way to drain the swamp, and that is from the top down. Sessions and the other department heads, needed to immediately replace their first two layers of direct reports, and replace them with people instructed to do extreme vetting and (if needed) replacement of the next three layers of the bureaucracy. Sessions is so far removed from the front line troops they can ignore his directives unless the mid-level bosses are willing to enforce those directives. Changing just the Secretary level in each department will do nothing.