The regulator is trying to stop the largest supermarket merger in history, arguing that the deal would eliminate competition and raise prices for consumers.

​Read More Kroger Company, Albertsons Inc, Supermarkets and Grocery Stores, Mergers, Acquisitions and Divestitures, Shopping and Retail, Prices (Fares, Fees and Rates), Private Equity, Antitrust Laws and Competition Issues, C&S WHOLESALE GROCERS, Federal Trade Commission