America’s largest retailer has long been a facilitator of fraud on a mass scale, a ProPublica investigation has found. For roughly a decade, Walmart has resisted tougher enforcement while breaking promises to regulators and skimping on employee training, according to more than 50 interviews, internal documents supplied by former industry executives, court filings and other public records.

Scammers dupe a victim, as they did with Browne, and then they exploit Walmart’s lax systems to get paid quickly and easily. That’s been true whether the fraudsters use Walmart gift cards or instruct customers to send funds by electronic money transfer. The company, in the latter instance, is supposed to be on the lookout for fraud and asking questions: Do you know the person you’re sending money to? Is the money transfer related to a telemarketing offer?