The U.S. Department of Justice is expanding its investigation into beef affordability. Eight large grocery retailers are being targeted, including Costco, Aldi, and Walmart. These companies have been sent letters regarding recent increases in retail beef prices.

The DOJ is seeking information about beef pricing, costs, and purchasing practices. Beef prices have been rising, causing frustration among shoppers.

Further details about the investigation are available from the source, including statements from the DOJ and information about the companies involved.