I respect the opinion of those who won't eat fois gras, but I do eat it when I'm in France
As I understand it, the ducks and geese there are fattened over a longer period, treating the animals more gently and producing a superior product, while in America it's done quickly and more harshly.
I think the ban is an emotional reaction to the idea of force feeding, but birds don't have a gag reflex like we do. In my opinion, there is a much more tragic story of animal cruelty in the way the average chicken is raised in the U.S.--on a factory farm.
Instead of a ban, I would be in favor of safeguards about the way all fowl is raised, guaranteeing humane standards which just happen to produce better tasting birds.