Who's more likely to send the anthrax? Obviously, the head of a major Muslim faction called for a Jihad against the US. All members of that group must submit to the will of their leader...a loner Muslim acting on his leader/Allah's behalf of course is the most likely criminal. We're bombing the H. out of his country.
My second choice would be Daschle, Leahy or someone from the one of the whacko left special interest groups attempting to pin this on the right out of desperation because not even the leftist press can destroy President Bush in the eyes of most Americans after the past 2 months.
You have to admit, the timing is a bit odd. They pull this letter out of the mail bag right on the heals of his challenge to President Bush's order for military tribunals to try foreigners accused of terrorist attacks. Just another one of those darn coincidences.