It appears (thank you, Lord) that someone's looking into who forged the Niger documents. A UK Guardian story states:
"A parallel investigation is under way into who forged the Niger documents. They are known to have been passed to an Italian journalist by a former Italian defence intelligence officer, Rocco Martino, in October 2002, but their origins have remained a mystery. Mr Martino has insisted to the Italian press that he was "a tool used by someone for games much bigger than me", but has not specified who that might be.
"A source familiar with the inquiry said investigators were examining whether former US intelligence agents may have been involved in possible collaboration with Iraqi exiles determined to prove that Saddam Hussein had a nuclear programme."
Well duh. Too bad we had to learn of this "parallel investigation" from a UK paper.