That urban legend has been going on for years. We sold Saddam some industrial chemicals, which could have been used in the production of chemical weapons, big deal, most of the chemicals known to man could harm someone in some form or another. And we sold him some civilian helicopters which could have been converted to military use. Somehow this has mutated to "Reagan gave Saddam all his weapons"
Iraqi weaponry was almost exclusively Soviet, Chinese and French. This is not opinion, or speculation, it is fact. Just look at all the stuff we blew up, not an American tank or APC among them.