I think that no politician wants to touch that with a ten foot pole because look how many fat ass senators, governors, and house members we have. Lookin at you Chris Christy.  Michelle Obama tried with the healthy kids food thing and that kind of bombed.  We have an atmosphere of no one loses, everyone is awesome, no bullying! Which means, you can't tell a fat person they are fat without 100 people giving you the stink eye. It would be political suicide.