FDIC Chair Gruenberg refuses to resign

U.S. Federal Deposit Insurance Corporation Chair Martin Gruenberg vowed to skeptical lawmakers Wednesday he would fix deep-seated cultural issues at his agency, as well as his own conduct.

But lawmakers expressed doubt that the bank regulator -- who spent nearly two decades in leadership roles at the agency and was also the subject of some employee complaints about his temper -- was fit for the job.

Testifying before Congress for several hours, Gruenberg was contrite both for failing...