I happen to think that the discovery of the letter to Leahy makes it more likely that it was a domestic terrorist than it was previously. It still might have been an arab or some other foreign terrorist. I don't know.
My question was simple. How can you rule out a rightwing nut as a domestic terrorist? If you can't rule one out, then the Leahy letter is more evidence pointing in that direction.
I'm not afraid of the political repercussions if this was the work of a rightwing nut. The discovery of the Unabomber didn't destroy liberals. There are people who are wackos who use politics as a motivating force. They are no reflection on those who hold genuine political beliefs and are strongly motivated. None.
I think there's an equally strong argument to be made that this is a leftwing nut trying to blame the right wing. But either way, this looks more like someone playing deadly politics than part of the 9/11 attacks to me.
I could be wrong. It's too early to know for sure. But if we deal in facts instead of personal attacks we're more likely to reach a rational conclusion.