This is similar to Flynn; as far as Trump was concerned he did nothing wrong and said so after the fact when he said the media drove him out.

A week before they had to cut him loose because he was a distraction with those Russian ties.

Sessions is a well liked senator so they (house/senate repubs) won't want to take him down. But if the press keeps the heat up, the WH might have to cut him loose just to avoid the scandal dominating the news cycle for weeks if not months.

Bannon and Priebus ain't work their behind the scenes to destroy the world to have some senator fuck up their plans!