Saddam ran a secular government and had to keep the Islamists under control to remain in power. The Islamists and Saddam were ideological enemies.
Saddam did not directly attack the US or have the means to do so. Saddam did not have the capability to support even a local war and did not have the capability to launch a WMD attack.
Saddam did not support any terrorist group that carried out any attack on US troops or citizens. (Unlike Saudi.)
Saddam did support the Palestinians but this was under an Arab nationalism cause and not as a religious cause. The amount of money spent by Saddam was minimal in context, but it was useful in order for him to further his goal of being seen as the leader of Arab nationalism.