Is to keep candy from kids. http://www.nytimes.com/2007/12/02/u...8Y4f/izOLCAYYNSQ&pagewanted=print&oref=slogin Federal lawmakers are considering the broadest effort ever to limit what children eat: a national ban on selling candy, sugary soda and salty, fatty food in school snack bars, vending machines and à la carte cafeteria lines. Whether the measure, an amendment to the farm bill, can survive the convoluted politics that have bogged down that legislation in the Senate is one issue. Whether it can survive the battle among factions in the fight to improve school food is another. Senator Tom Harkin, Democrat of Iowa and the chairman of the Agriculture Committee, has twice before introduced bills to deal with foods other than the standard school lunch, which is regulated by Department of Agriculture.