Maybe it was fake resistance during the confirmation
Sessions and other cabinet positions are there because one man can't do everything. They are acting This whole idea of it being constitutional, necessary, or just for the president and attorney general to be independent is nonsense.
I dunno, the media has gone to lengths trying to make Trump look corrupt in the public eye. Congress might be waiting for direct, public action by Trump as a reason to jump on board with that.
*they are acting in the president's stead
If Sessions ever starts knocking over the dominoes, the same people will start hating him again in less than a day.