“Mueller is in clear and undisputed violation of federal law, yet he fails to resign”
Resign? Seriously there is 0 chance he’s going to resign, recuse or stay within the so called reasons for the investigation. Trump’s only recourse is to fire Rosenstein. His replacement could get Mueller under control. I see no signs of this even being considered. Tweeting does nothing to stop or even slow down the coup. Sessions is worthless or even working with them. He could easily suspend his recusal and do an audit on what Mueller has been up to but does nothing.
Sessions acted to remove suspicion, that he was trying to hide something. Whether that was a mistake or not, his personal credentials are impeccable. There are other ways to deal with Mueller--legal & ethical ways--including a sustained public hue & cry at a level the media will not be able to really ignore.