The U.S. Supreme Court, listening calls from companies to consider curtailing class actions, will decide whether Wal-Mart Stores Inc. must be charged for a gender-bias suit on behalf of 1 million of its employees. The case is Wal-Mart Stores v. Dukes, 10-277. According to the justices in a statement yesterday, they will review a decision of the federal appeals court that approved a single suit to cover women workers at...