Retailers now have fresh power to say no when you swipe, even if your credit card is valid and your account is in good standing. For shoppers at giants like Walmart and Target, that means the plastic ...

The retailers were part of a group that sued banks and credit card companies two decades ago.

More than a year after Target Corp.’s massive data breach, the retailer announced a settlement agreement with MasterCard to compensate card issuers for operational costs and fraud-related losses.