In testimony on Capitol Hill today, Federal Reserve Chairman Alan Greenspan laid the groundwork today for possibly raising interest rates when the Fed meets next week. Greenspan said there are signs that inflation could rebound, and that the Fed must be proactive in snuffing out any signs of inflation with a rate hike. But lawmakers were not convinced that a rate hike is really necessary, given steady economic growth and stable inflation numbers. NPR's John Ydstie reports.

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