The White House Press Secretary speaks about accusations from Richard Clarke's book. From the White House Daily Briefing - March 22, 2004:
"Well, why, all of a sudden, if he had all these grave concerns, did he not raise these sooner? This is one-and-a-half years after he left the administration. And now, all of a sudden, he's raising these grave concerns that he claims he had. And I think you have to look at some of the facts. One, he is bringing this up in the heat of a presidential campaign. He has written a book and he certainly wants to go out there and promote that book. Certainly let's look at the politics of it."
Scott McClellan
March 22, 2004
http://www.globalsecurity.org/military/library/news/2004/03/mil-040322-usia01.htm