This is from a speech given by Ron Paul back in 2002 standing up for the Constitution, saying why we shouldn't attack Iraq. The full speech is in the title link.
Claim: Saddam Hussein will use weapons of mass destruction against us - he has already used them against his own people (the Kurds in 1988 in the village of Halabja).
Reality: It is far from certain that Iraq used chemical weapons against the Kurds. It may be accepted as conventional wisdom in these times, but back when it was first claimed there was great skepticism. The evidence is far from conclusive. A 1990 study by the Strategic Studies Institute of the U.S. Army War College cast great doubts on the claim that Iraq used chemical weapons on the Kurds. Following are the two gassing incidents as described in the report:
In September 1988, however - a month after the war (between Iran and Iraq) had ended - the State Department abruptly, and in what many viewed as a sensational manner, condemned Iraq for allegedly using chemicals against its Kurdish population. The incident cannot be understood without some background of Iraq's relations with the Kurds...throughout the war Iraq effectively faced two enemies - Iran and elements of its own Kurdish minority. Significant numbers of the Kurds had launched a revolt against Baghdad and in the process teamed up with Tehran. As soon as the war with Iran ended, Iraq announced its determination to crush the Kurdish insurrection. It sent Republican Guards to the Kurdish area, and in the course of the operation - according to the U.S. State Department - gas was used, with the result that numerous Kurdish civilians were killed. The Iraqi government denied that any such gassing had occurred. Nonetheless, Secretary of State Schultz stood by U.S. accusations, and the U.S. Congress, acting on its own, sought to impose economic sanctions on Baghdad as a violator of the Kurds' human rights.
Having looked at all the evidence that was available to us, we find it impossible to confirm the State Department's claim that gas was used in this instance. To begin with, there were never any victims produced. International relief organizations who examined the Kurds - in Turkey where they had gone for asylum - failed to discover any. Nor were there ever any found inside Iraq. The claim rests solely on testimony of the Kurds who had crossed the border into Turkey, where they were interviewed by staffers of the Senate Foreign Relations Committee...
It appears that in seeking to punish Iraq, the Congress was influenced by another incident that occurred five months earlier in another Iraqi-Kurdish city, Halabjah. In March 1988, the Kurds at Halabjah were bombarded with chemical weapons, producing many deaths. Photographs of the Kurdish victims were widely disseminated in the international media. Iraq was blamed for the Halabjah attack, even though it was subsequently brought out that Iran too had used chemicals in this operation and it seemed likely that it was the Iranian bombardment that had actually killed the Kurds.
Thus, in our view, the Congress acted more on the basis of emotionalism than factual information, and without sufficient thought for the adverse diplomatic effects of its action.
Claim: Iraq harbors al-Qaeda and other terrorists.
Reality: The administration has claimed that some Al-Qaeda elements have been present in Northern Iraq. This is territory controlled by the Kurds - who are our allies - and is patrolled by U.S. and British fighter aircraft. Moreover, dozens of countries - including Iran and the United States - are said to have al-Qaeda members on their territory. Of the other terrorists allegedly harbored by Iraq, all are affiliated with Palestinian causes and do not attack the United States.
Claim: President Bush said in his speech on 7 October 2002: ' Many people have asked how close Saddam Hussein is to developing a nuclear weapon. Well, we don't know exactly, and that's the problem...'
Reality: An admission of a lack of information is justification for an attack?"