George W. Bush is President of the United States. He trusts Blair and has confidence in the representation of British Intelligence. While I have no problem with the factual sentence in the speech and have been defending it for days here on FR, I can see how a standard for only referencing our own intelligence in a SOTU speech would have this administration say that in retrospect they would not include it in such a speech.
The administration also is pointing out what we have said: That the British stand by their information.