You bet. I don't know that there's a relationship between trans fats and childhood obesity, but I know enough about trans fats to be completely supportive of your recommendation to ban them, and I know enough about nutrition labelling to know that labelling foods “trans fat-free” does not remove trans fats from the diets, particularly of low-income people. So if you want a health measure that is actually experienced across the board, rather than a measure that simply exacerbates health inequities, then banning is the right thing to do.
However, if you get to the point at which this government agrees to ban trans fats and actually takes action, it's really important to make sure there are measures in place so that the prices of foods do not rise as a result of particular sectors of the food industry having to incorporate new production methods. For example, we've done a lot of work in my group on the prices of margarines, and right now we know that the cheapest margarines you can buy are the margarines that are laden with trans fats. We know that the people in our study are most likely to buy those cheap margarines. If this ban ever comes into existence, it will be really important that the price of margarine not triple.