This is actually quite interesting. Basically, the State Dept memo about Plame and Wilson shows that State didn't buy the administration's bull about Niger and uranium. So it's more evidence that Bush knew the claims were bull:
A State Department memo that has caught the attention of prosecutors describes a CIA officer's role in sending her husband to Africa and disputes administration claims that Iraq was shopping for uranium, a retired department official said Tuesday.... "It was a memo on uranium in Niger and focused principally on our disagreement" with the White House.