http://www.msnbc.msn.com/id/11373537/
From Saddam's own lips regarding terrorist attacks against the U.S.:
"This is coming, but not from Iraq."
Some will want to interpolate meaning and assert that he meant he wanted to attack the U.S. by proxy.
But given the lack of a shred of evidence that he engaged in the planning or encouragement of an attack against the U.S. it seems most likely that he meant what he said: that all else being equal terrorists would eventaully attack the U.S. but he would keep Iraq out of it.