"But I want to just caution, it is not incumbent on the United States to prove that Saddam Hussein is trying to acquire weapons of mass destruction. He's already demonstrated that he's trying to acquire weapons of mass destruction"

This quote by Condoleezza Rice is an alerting to the United States that it is not their responsibility to show that Saddam Hussein is trying to get weapons of mass damage. Rice is highlighting that Hussein has currently shown his intents to get such weapons, which the United States should not be anticipated to provide further evidence. This quote is a tip that the United States ought to not be contented in its efforts to prevent the spread of weapons of mass damage, and that it ought to take proactive steps to make sure that such weapons do not fall into the incorrect hands. Rice's words are a suggestion that the United States need to stay watchful in its efforts to safeguard itself and its allies from the danger of weapons of mass destruction.