I'm not expert in this topic, but I've had a keen interest in Agent Orange after spending a lot of time in Vietnam (fortunately, after the war). As you can imagine, there are plenty of Vietnamese who still suffer the effects today. I did a little online research, so thought I'd share it...
95% correct. Agent Orange itself wasn't used on US domestic crops, but its components were. Agent orange is a blend of two herbicides, one of which (2,4,5-Trichlorophenoxyacetic acid, or 2,4,5-T for short) contains dioxin (which causes cancer and birth defects). So yes, 2,4,5-T was used on US domestic crops until about
1970. Even after it was banned in the USA, it was still being exported to foreign countries (not only Vietnam) despite the fact that its deadly side-effects were by then well understood.
Ironically, by continuing to export 2,4,5-T to foreign countries long after the Vietnam War ended, some of it came back to haunt America in the form of food imports. All that nice tropical fruit (bananas, pineapples, mangoes, etc). As they say, what goes around comes around.
Dioxin is found in other things besides Agent Orange, though in much lesser amounts. The biggest source is burning garbage (specifically, plastic garbage). All of us have been exposed to a little dioxin, though some people have obviously received a much greater dosage than others. Whether or not this causes Crohn's disease, I don't know.
My sources for the above info:
Video: Exporting Banned Pesticides 1982
Video: 2,4,5 T Pesticide Use in Malaysia 1982
Crohn's since 1988
Post Edited (ozonehole) : 8/11/2010 12:53:08 AM (GMT-6)