As commenters point out, that's not the job of the government. As others pointed out sugar is not dangerous. Sugar provides is an oxidizer. Oxidants are said to be bad, but oxidation is how your muscles work. Any food including water is bad along with good and any is dangerous in large quantities. But the quantity of sugar that is dangerous varies for people just like water or anything else.
As I pointed out, I don't trust or like the heavy hand of government.