In a case that has rattled America's food supply chain, three of the country's largest egg producers have agreed to a multimillion-dollar settlement after being accused of secretly working together to push egg prices higher for years. For millions of American households, eggs went from a kitchen staple to a budget headache over the past two years. Now, a joint investigation by the U.S. Department of Justice (DOJ) and 17 state governments claims to have found out why, and the answer, according to authorities, wasn't just bird flu, AP report stated.