The head of the Philly Fed, Charles Plosser, today raised the possibility of a stagflation threat to the US economy. "Although I am expecting slow economic growth for several quarters, we should not rely on slow growth to reduce inflation," the Philadelphia Federal Reserve Bank president warned in a speech here. "Indeed, the 1970s should be a sufficient reminder that slow growth and falling inflation do not necessarily go hand in hand." Plosser, who has a vote on the rate-setting Federal Open Market Committee this year, warned that he is getting increasingly worried about inflation. "Recent data suggest that inflation is becoming more broad-based," he said, "And recent increases do not appear to be solely related to the rise in energy prices. Consequently I see more worrisome signs of underlying price pressures." Plosser also used today's speech to draw a clear line between what the Fed should do to stabilize the economy and what it should do to stabilize financial markets.