Jamie Dimon warns of 'critical issues' that could affect US economy

JPMorgan Chase CEO Jamie Dimon on Friday warned investors about current risks to the global economy, and pointed to "critical issues" facing the U.S., in particular."We have been closely monitoring the geopolitical situation for some time, and recent events show that conditions are treacherous and getting worse," Dimon said in a press release accompanying JPMorgan's third-quarter earnings. "There is significant human suffering, and the outcome of these situations could have far-reaching effects