Kids get bloated because of lifestyle. Fundamentally, if this bill doesn't get them off their ass, into the cold weather outside, and aways from fast food & junk food, then it cannot work. The gov't can't fix obesity.
We've built a society based around the automobile and personal entertainment. Nanny moms won't make their kids walk a mile or two to school, play in the cold, and they themselves probably never take a stroll thru the neighborhood or to the grocery store. Kid are too busy playing Playstation, watching their iPads, and eating cake, instead of riding their bike, "loitering" around town, and playing rec sports.
In these regard, American lifestyle has been declining since the 50s.