The Fed chair will speak Friday at an annual economic symposium in Jackson Hole, Wyo. The speech comes as the central bank is under mounting pressure from the White House to lower interest rates.

Federal Reserve Chair Jerome Powell is set to give what could be his most consequential speech yet — just a few days after one of his colleagues was threatened with prosecution for alleged mortgage fraud.

President Donald Trump is calling on a Federal Reserve governor to resign over an accusation of mortgage fraud.