This whole argument is bogus.
Flaw #1 - Apparently, the question asked was "Did the U.S. use chemical weapons in Iraq?" The answer was no, so the "journalist" changes the definition of chemical weapons and proudly pronounced that the U.S. government had lied. dishonest reporting
Flaw #2 - Instead of going to a proper source for info, these questions were asked of the Ambassador to England, Robert Tuttle, and the Ambassador to Italy. Why would think they would know what all weapons were used on the battlefield in Iraq? When you get to the bottom of the article that's linked to on the first page of this thread, you find this quote:
[Indeed, the Pentagon readily admits WP was used. Spokesman Lt Colonel Barry Venables said yesterday WP was used to obscure troop deployments and also to "fire at the enemy". He added: "It burns ... It's an incendiary weapon. That is what it does."]
So if they would have went to the proper source to beging with, there would have been no story. lazy journalism at best, probably more dishonest journalism.
There's still no credible evidence that anyone tried to deliberately mislead regarding the use of WP or Napalm.