Sen. Joe Lieberman (D-Conn.) has asked for a federal investigation into fast-food restaurant’s marketing practices. He wants the Federal Trade Commission to determine if there’s a link between “junk-food” advertising and the increase in obesity among children.

Lieberman says he will push for three interim moves while the FTC conducts its study:

  • Require junk-food advertisements to include nutritional information, with a warning to parents.
  • Ask Congress to require quick-service restaurants to include nutritional information on menus and mini-boards.
  • Empower USDA to set standards for food sold in schools, especially in vending machines.

Lieberman will not define “junk food,” leaving that to dietary and health-care experts.