By Pete Schroeder WASHINGTON (Reuters) -JPMorgan Chase & Co Chief Executive Jamie Dimon will warn Congress of economic “storm clouds,” while Wells Fargo CEO Charles Scharf will urge patience as the bank addresses longstanding regulatory issues, according to wide-ranging prepared testimony. The heads of the nation’s seven largest banks on Wednesday and Thursday will broadly defend their performance, highlighting efforts to steer billions of dollars in government support, tout efforts to boost diversity within their ranks, as well as efforts to cut emissions to combat climate change, according t…
