The overhang of severely delinquent and in-foreclosure residential mortgages continues to challenge large banks with extensive mortgage operations, while it also affects the economic environment for all banks, according to the Office of the Comptroller of the Currency.The OCC’s latest Semiannual Risk Perspective report flagged three major risk concerns for the banking industry: the aftereffects of the recent housing-driven credit boom-bust cycle; the challenges to banking industry revenue growth after the recession; and the potential that banks may take excessive risks in an effort to ...