If I served on his legal staff and I had reached the opinion the he no longer possessed the mental acuity that I had come to expect from him, I would attempt to document those instances where his mental acuity was lacking as well as those times that he seemed to possess those skills. I would then state that to continue without addressing the situation, could result in great peril and severe consequences. I would send this letter to Rob Rosenstein who is responsible for the SC.
I shall only cover two possibilities that may result, in this post. First is that Rosenstein takes no action at all. Given a suficient period of time for action with no action, I would resign imediately from the staff of the SC without any explanation. This may or may not cause further action to be taken.
Second, Rosenstein may choose to have me meet with him to discuss the issue which I would certainly consent. I would take extensive notes of such a meeting and then write a letter to him recounting the issues and opinions and facts discussed in the meeting. I learned a long time ago that if you put your issues and thoughts in writing, they are seldom ignored.
Third, if he came to the conclusion that there needed to be nothing done, I would do nothing more, but I probably would still resign.
I don't take this action lightly and realize that there are many possibilities that may take place that would affect me negatively. All at this point is to say that I am only doing what I believe to be my responsibility.