From the Summary: "The Dietary Guidelines for Americans (DGA) is a policy document that provides federally developed, nutrition-based recommendations for Americans two years of age and older. The guidelines are statutorily mandated under the 1990 National Nutrition Monitoring and Related Research Act (P.L. 101-445), which requires the Departments of Health and Human Services (HHS) and Agriculture (USDA) to jointly publish the DGA policy document at least once every five years. The DGA forms the basis for all federal nutrition policies, including the National School Lunch Program and the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC). The guidelines also (1) influence food and nutrition labeling; (2) guide local, state, and national health promotion and disease prevention initiatives; and (3) inform various organizations and industries (e.g., products developed and marketed by the food and beverage industry)."
CRS Report for Congress, R44360
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html