From the Summary: "After asserting that Iraq had failed to comply with U.N. Security Council resolutions that required Iraq to rid itself of weapons of mass destruction (WMD), the Bush Administration began military action against Iraq on March 19, 2003, and the regime of Saddam Hussein fell on April 9. U.N. Security Council resolution 1483, adopted May 22, 2003, lifted sanctions on Iraq and provided for the possibility that U.N. inspectors could return to Iraq, although the United States, not the United Nations, conducted the post-war WMD searches. U.S. teams attempted to find WMD and related production programs. Only minor finds of actual WMD were made. A major report (September 30, 2004) by U.S. experts performing post-war WMD searches (the 'Duelfer report') has concluded that pre-war U.S. assessments of Iraq's WMD capabilities were mostly incorrect but that analysis of Saddam's WMD intentions was probably accurate. Iraq remains barred from developing WMD by the Saddam-era U.N Security Council resolutions, even though there is a new government in Baghdad that is relatively democratic, and even though the formal WMD search effort was ended by the U.N. Security Council."
CRS Report for Congress, RL32379