The guilt or innocence of Bruce Ivins comes down to this:
Officially, the U.S. does not have or keep any weapons-grade anthrax. President Nixon ordered the dismantling of U.S. biowarfare programs in 1969 and the destruction of all existing bioweapons, including anthrax.The anthrax used in the attacks in 2001 was weapons-grade. As the article points out, turning liquid anthrax (the kind Ivins worked with) into weapons grade anthrax is a complex process that it is almost inconceivable for one person to carry out, and certainly inconceivable that Ivins carried it out in a high-security facility.
But the fact that such anthrax does not officially exist, explains why no one has ever been charged with this crime, and why the FBI is now so anxious to pin it on a dead man.
And suddenly I wish Fox Mulder worked for the real FBI......