JACKSON HOLE, Wyo. (AP) Federal Reserve Chair Jerome Powell issued a stern warning on Friday about the Fed's intention to combat inflation with further rate hikes: It will almost certainly cost Americans pain in the shape of a weakened economy and job losses. The message hit Wall Street with a blow, sending the Dow Jones Industrial Average down more than 1,000 points for the day. image address: "These are the terrible costs of lowering inflation," Powell said at the Fed's annual economic conference in Jackson Hole. "However, failing to restore pricing stability would cause far more hardship." Investors were hoping for a signal from Powell that the Fed might soon slow its rate hikes later this year if inflation continued to fall. However, the Fed chair signalled that this time may not be near, and markets fell as a result. Even if the jobless rate has plummeted to a half-century low of 3.5 percent, runaway price hikes have soured most Americans on the econom...