Ron Suskind's new book The Way of the World, with the support of on-the-record CIA officials, states that the Whitehouse ordered the CIA to forge a letter from Iraq's head of intelligence to Saddam stating that 9/11 ring leader Mohammed Atta was trained in Iraq for the attacks.
This letter published by the Sunday London Telegraph in December 2003 was designed to provide justification for the invasion that had been planned since Bush took office before 9/11.
Suskind further claims that based on a report by British Intelligence (among other sources, including inspectors on the ground) that the bushites knew that Saddam had no weapons of mass destruction and no programs to produce such weapons. They of course ignored this information because it didn't suit their goals of war on Iraq and war on reality.
This provides one more set of evidence in an ever mounting pile of evidence that George W. Bush is murderer and a traitor and should be brought to legitimate justice before the law.