Jeff Sessions offered up some AF's, i.e. lies, regarding his contacts with the Russians during his confirmation hearings:

Story here

Why did both Sessions and Flynn lie under oath about contact with the Russians, it leads one to think there is some there there. At the very least Sessions needs to recuse himself from the investigation into the Russian involvement in the election and ideally he should resign or be fired as Top Cop. It's time for a Special Prosecutor and time also for both the heads of the House and Senate Intel committees, both advocates for the administration, to recuse themselves as well.