The real anthrax killers died when they flew the planes they hijacked into the World Trade Center on 11 Sept, 2001, and then also when Saddam Hussein was hung to death.
Political correctness and the idea that you had to have an air-tight legal case before going after whole nations that mean us harm will be the death of too many of us.
Muhhamad Atta and his gang got weaponized anthrax from Saddam Hussein’s regime when Atta met Iraqi intel officers in Prague in May of 2001, and Atta and his villians mailed the Anthrax letters, to be mailed in NJ, by accomplices, after they died. That is why from their safe house in Fla, the first anthrax victim was the guy right there at the National Star, and the druggist had to offer Atta and another fiend some antibiotics days before 9/11.
The CIA does not credit that Atta got Ames from an Iraqi agent in Prague.
Plus, of course, the hijackers were dead at the time of the mailing.
CIA Director Tenet, though, says the anthrax planning was done in parallel with the planes operation.