I think a lot of people get hung up on the word "fat", as if the ban is an attempt to eliminate good taste.
But trans fats aren't natural.
http://www.hsph.harvard.edu/reviews/transfats.html
They are produced when liquid vegetable oils are heated in the presence of metal catalysts and hydrogen. Yum!!!
Their main use has nothing to do with taste; they're a preservative. They're also used as hardening agents in shortening and margarine.
So despite the name, regulating them is no different from regulating any other artificial chemical in the food supply.