(Reuters) -One last time since President Donald Trump nominated him to lead the U.S. central bank in late 2017, Federal Reserve Chair Jerome Powell on Friday will walk through the Jackson Lake Lodge's expansive lobby,

Wall Street will be listening closely to Federal Reserve Chair Jerome Powell's speech Friday at the Jackson Hole economic policy summit, where he could signal whether the central bank is ready to cut borrowing costs at its next meeting in September.

The president and his allies accuse Powell of dragging his feet on interest-rate cuts, in a caustic and unprecedented pressure campaign.