[ronald reagan]

Was it Iraq, or Afghanistan that harbored the 9/11 terrorists? Or, are you going back to the WMD argument?

It was neither. 15 of the 19 were from Saudi Arabia, 2 from the UAE, 1 from lebanon, and 1 from Egypt. Only a few trained in Afghanistan for a very short period of time.

And if you'd like to read the reasons for the Iraqi war, please do.

Iraq's noncompliance with the conditions of the 1991 ceasefire agreement, including interference with U.N. weapons inspectors.
Iraq's alleged weapons of mass destruction, and programs to develop such weapons, posed a "threat to the national security of the United States and international peace and security in the Persian Gulf region."
Iraq's "brutal repression of its civilian population."
Iraq's "capability and willingness to use weapons of mass destruction against other nations and its own people".
Iraq's hostility towards the United States as demonstrated by the 1993 assassination attempt on former President George H. W. Bush and firing on coalition aircraft enforcing the no-fly zones following the 1991 Gulf War.
Members of al-Qaeda, an organization bearing responsibility for attacks on the United States, its citizens, and interests, including the attacks that occurred on September 11, 2001, are known to be in Iraq.
Iraq's "continu[ing] to aid and harbor other international terrorist organizations," including anti-United States terrorist organizations.
Iraq paid bounty to families of suicide bombers.
The efforts by the Congress and the President to fight terrorists, and those who aided or harbored them.
The authorization by the Constitution and the Congress for the President to fight anti-United States terrorism.
The governments in Turkey, Kuwait, and Saudi Arabia feared Saddam and wanted him removed from power.
Citing the Iraq Liberation Act of 1998, the resolution reiterated that it should be the policy of the United States to remove the Saddam Hussein regime and promote a democratic replacement.

Lets remember it was Tom Daschle (D) and Dick Gephart (D) who wrote the bill.