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US Federal Reserve faces changeover in midstream

US Federal Reserve chief Ben Bernanke speaks at a news conference in Washington, DC, on September 13, 2012. Bernanke appears poised to depart in January, even though the US economy remains weakened by the financial crisis that erupted five years ago.There's never a good time to change the head of the US central bank, according to Ethan Harris, who wrote "Ben Bernanke's Fed" about the chairman of the Federal Reserve.