Anecdotal and empirical evidence confirm that mortgage lenders are continuing to lighten up on their underwriting criteria. The loosening may not be as pronounced as it was in the run-up to the financial crisis, but there are concerns that it will intensify as the Federal Reserve raises interest rates. Fannie Mae’s latest mortgage lender sentiment survey found that more lenders said they have eased credit standards than tightened them, something the government-sponsored enterprise attributed to limited demand for residential finance and a negative outlook on profit margins. “The net share of lenders reporting easing of credit standards over the prior three months has continued...