As Glenn Greenwald has reminded us, Brian Ross was the one who reported the lie that the anthrax mailed in 2001 had chemical markers that indicated the anthrax had come from Iraq. He claimed 4 sources for this lie.
It's pretty simple for me - the liar is Brian Ross, and he and his associates at ABC news are now known propagandists.
The only way they can earn back a little bit of respect is to name the people, if they exist, who fed them the false information which was no doubt intended, and certainly used, to help justify the stupid war in Iraq.
Until they come clean I'll consider ABC News to be as reliable as TASS in the 70s.