Basically any Attorney General in the past. Can you name another who recused himself, which resulted in a special counsel being appointed to investigate the President? Trump himself has had some choice words for this, calling Sessions quote "weak," "beleaguered," and "unfair to the President" off the top of my head. Then today Trump unfavorably compared Sessions to Obama's AG Eric Holder, with regard to their support of the President.
And I'm comparing him to any other Senator that left their seat to take an appointment in the President's cabinet, but then refused to support the candidate of the same party who was running for his vacancy position in the Senate. What Sessions (and Shelby, and known RINO) did was a disgrace. A strong case can be made that their shenanigans cost Republicans that important spot in a tightly contested Senate, where impeachment of the President is an unfortunate possibility.
While all this has been going on, Sessions has been busying himself with relatively unimportant matters that any AG could have attended just as well. Almost everyone criticizing Sessions is a former supporter of his, but he's failed miserably on the issues that mattered the most.
That’s a strong statement.
I take it you are disappointed in this Presidency and wish things were different.