The Federal Reserve is nearly certain to keep its key interest rate unchanged at its policy meeting this week, just a few days after President Donald Trump said he would soon demand lower rates. Fed officials, led by Chair Jerome Powell, have cut their rate for three meetings in a row, to about 4.3%, from a two-decade high of 5.3%. While the two-day meeting that ends Wednesday may be uneventful, it nevertheless kicks off what is likely to be a turbulent year for the Fed. Trump, last Thursday, made clear he expects to comment on interest-rate policy and said, “I know interest rates much better than they do."