A US judge dismissed a core allegation by the Federal Trade Commission against Walmart, which accused the retailer of turning a blind eye to fraudsters who use its money transfer service to cheat consumers out of hundreds of millions of dollars. In Wednesday's ruling, a federal judge in Chicago rejected the charge that Walmart violated federal telemarketing rules and should pay money damages. The rule prohibits deception and unfairness in telemarketing, and prohibits payment by remittance for goods and services offered through telemarketing. The judge said the Federal Trade Commission had not provided enough specific details to show that the world's largest retailer and its allegedly poorly trained employees consciously ignored warning signals of fraudsters using its money transfer service for illegal activities.