I got interested in this because it was Robert Mueller (currently investigating "Russian collusion") that endlessly harassed Army Scientist Bruce Ivins. It's a classic federal "lone nut" scenario. Extremely sketchy evidence, a public disinformation campaign enthusiastically trumpeted by corporate/government-controlled media, and a bizarre suicide (by Tylenol with no note).
Time has shown that Mueller's case was full of holes, but they went ahead and destroyed this guy's life. And as this article points out, Dick Cheney was handing out Anthrax antidote to his staff before the attacks started. Mueller is sketchy as hell, and he also suppressed the evidence against Saudi Arabia being involved in 9/11. He seems to be the guy the government hires when they want a particular investigative conclusion to be reached.
http://www.slate.com/articles/technology/technology/2008/08/the_anthrax_truth_movement.html
http://dailycaller.com/2018/01/23/mueller-9-11-saudi-cover-up/
It's impossible for a corporation or government to love you or care about you.