President Donald Trump slammed Federal Reserve Chairman Jerome Powell on Thursday after the central bank held interest rates steady. "We should have a substantially lower rate now that even this moron admits inflation is no longer a problem or threat," Trump wrote in a Truth Social post one day after the Fed's rate cut meeting. "He is costing America Hundreds of Billions of Dollars a year in totally unnecessary and uncalled for INTEREST EXPENSE. Because of the vast amounts of money flowing into our Country ...