The Financial Industry Regulatory Authority’s chairman and chief executive, Richard G. Ketchum, says that despite failing to stop or even stem the financial crisis, the investment industry’s non-profit, self-regulatory agency is up to the challenge of being the country’s top securities enforcer. “We want to be in there stopping the activity, not just cleaning up the bodies. We’ve changed the organization to be able to respond more quickly. I think we’re more agile now than we were three years ago,” Ketchum told the New York Times.