President and first lady Michelle Obama's bid to cut kid obesity through new demands for more costly but healthier food is financially crushing the nation's school cafeterias, forcing staff cuts, boosting waste and killing plans to buy new equipment, according to an industry association. A new survey from the School Nutrition Association reported that 70 percent of the nation's lunch programs have been financially "harmed" by the new low-salt, low-sugar menus and that a stunning 93 percent report fewer students buying the chow. "Meeting these mandates has harmed the financial health of nearly 70 percent of school meal programs surveyed,...