Housing is showing some traction, but heavy regulation and enforcement continue to weigh on the mortgage market, according to analysts at this week’s secondary-market conference sponsored by the Mortgage Bankers Association in New York. Charles Gabriel, president of Capital Alpha Advisors, said there are some green shoots in the mortgage market, including signs of more home sales. But he characterized it as “a mature market that is suboptimized.” Lenders have paid massive penalties in lawsuits, he added, and there is no sign that they will expand the credit box. “U.S. Bank was asked...