"the idiocy of this is pretty obvious... a well-documented history of failed bans"
I would really like to hear an explanation for why I should believe trans-fats are more like like heroin and cocaine than they are like leaded gasoline, asbestos, DDT, CFC's in aerosol cans, kepone, thalidomide, or seatbelt-less cars.
Otherwise (and at the risk of being labeled an idiot), I think a trans-fat doughnut is almost 100% replaceable with a non-trans-fat doughnut, and there won't be a black market in trans-fats any more than there's a black market for lead paint. King of the Hill was a funny show, but in real life I think it's abundantly clear that people do not prefer the taste of trans-fats like Crisco and margarine to butter and lard.
Also, here's some empirical data from New York's successful ban on trans-fats:
"An analysis of 6,969 receipts collected from chains like McDonald's, Burger King, Subway, KFC, and Pizza Hut in 2007 found that the average fast-food meal contained 2.9 grams of trans fat. A sample of 7,885 receipts from 2009 found that after the ban was put in place that number dropped to 0.5 grams, an amount deemed negligible by the FDA."
http://nymag.com/daily/intelligencer/20 ... ssful.html