Mike Duggan, mayor of Detroit, introduces Jamie Dimon, chairman and chief executive officer of JPMorgan Chase & Co., not pictured, at the Detroit Economic Club in Detroit, Michigan, U.S., on Thursday, Sept. 17, 2015. Dimon broke with the prediction of his bank's top U.S. economist, saying the Federal Reserve probably will hold off Thursday on boosting interest rates. Photographer: Laura McDermott/Bloomberg via Getty Images