I wouldn't ban HFCS, I would just remove added sugar and HFCS from grocery items that don't need sweeteners or cconventionally never had sweeteners in them (it adds a lot of unnecessary calories, makes it harder for diabetics to shop, and usually tastes worse than unsweetened versions).
For example, I found pita bread with sweeteners in it (why? And yuck). Or most jarred tomato based pasta sauces (they typically make the sauce taste too sweet).
This seems to be a mainly American problem, though.