Two federal banking regulators have raised concerns about risks associated with nonbanks gaining market share in the mortgage industry. In a report published this week, the Office of the Comptroller of the Currency said banks are loosening mortgage underwriting standards in response to “intense competition” from nonbanks. The OCC cited higher thresholds for back-end debt-to-income ratios, higher acceptable loan-to-value ratios and lower downpayment requirements. The trends were ...