The U.S. economy could slow down unless interest rates are lowered immediately, President Donald Trump said on Monday, repeating his criticism of Federal Reserve Chair Jerome Powell. "With these costs trending so nicely downward, just what I predicted they would do, there can almost be no inflation, but there can be a SLOWING of the economy unless Mr. Too Late, a major loser, lowers interest rates, NOW," Trump said in a post on Truth Social.