The Federal Reserve, long hesitant to raise U.S. interest rates, increasingly faces risks if it waits too much longer so a gradual policy tightening is likely appropriate, a top Fed official said on Friday. In another sign that a U.S. rate hike is approaching, Boston Fed President Eric Rosengren said "risks to the forecast are becoming increasingly two-sided." That means that while a slowdown overseas remains a concern, the U.S. economy has proven resilient and could even overheat if Fed policy remains unchanged for too much longer, he said. Rosengren, an historically dovish Fed policymaker who has become more ... (full story)