Wrong on all counts, pdq...

"Prolonging the war was phenomenally expensive. Iraq received massive external financial support from the Gulf states, and assistance through loan programs from the U.S. The White House and State Department pressured the Export-Import Bank to provide Iraq with financing, to enhance its credit standing and enable it to obtain loans from other international financial institutions. The U.S. Agriculture Department provided taxpayer-guaranteed loans for purchases of American commodities, to the satisfaction of U.S. grain exporters.

The U.S. restored formal relations with Iraq in November 1984, but the U.S. had begun, several years earlier, to provide it with intelligence and military support (in secret and contrary to this country's official neutrality) in accordance with policy directives from President Ronald Reagan. These were prepared pursuant to his March 1982 National Security Study Memorandum (NSSM 4-82) asking for a review of U.S. policy toward the Middle East."

http://www.gwu.edu/~nsarchiv/NSAEBB/NSAEBB82/

Saddam was the US' proxy fighter in its (the US') war against Iran. Saddam was killing people on behalf of the United States. If Saddam was the worst thing since Hitler and Stalin, then that makes the US the worst thing since Hitler and Stalin as well, since he could not have done the things he did without our help, including attaining the position of dictator of Iraq.