WASHINGTON (AP) — Federal Reserve Chairman Jerome Powell says the Fed will likely keep raising short-term interest rates at a gradual pace, partly because there are few signs, so far, that the ultra-low U.S. unemployment rate is pushing up inflation. In a speech in Portugal, Powell said Wednesday that with the unemployment rate at an 18-year low of 3.8 percent and inflation near the Fed's 2 percent target, the case for continued gradual increases in rates "is strong.Read more on NewsOK.com