That was an urban legend fabricated by the left and blamed on us. And it's continued to live in leftists cabals ever since.
Did Iraq sponsor terrorism? It most certainly did.
Did Saddam allow al-Qaeda cells to move and operate freely inside Iraq's borders? Yes.
But nothing has ever been proven linking Saddam or the Iraqi Government to the 9/11 attacks.
And W, Cheney, or either SoS ever, ever, said he did! It was all made up by the likes of that bitch at Huffpo, the traitors at Kos and the DUmbasses at DU!
Even when you rub that fact in their noses, they will still say "did too!".