"I do not believe tariffs will cause any sustained inflation, and therefore I believe the Fed should cut interest rates in September. I also expect that they will do so, but that Powell will not reveal that at Jackson Hole," he added.

Jay Powell’s speech at the Federal Reserve’s August summit in Jackson Hole, Wyoming, is always a high-stakes moment. This year, the central bank’s chair takes the podium under fire — facing fierce attacks from Donald Trump and a growing insurgency within his own institution.

The stock market is heading into a catalyst-filled week as Fed Chair Jerome Powell gets ready to speak at Jackson Hole and big retailers report earnings.

By Howard Schneider WASHINGTON (Reuters) -Fed Chair Jerome Powell used the central bank's annual Wyoming research conference to promise inflation-fighting rigor when it was needed in 2022, then last year he came to the defense of the job market with promises of lower interest rates when the unemployment rate seemed on a steady rise.

The U.S. dollar inched upward on Thursday, trading just below a one-week high as investors prepared for the Federal Reserve’s Jackson Hole symposium. By 04:40 ET (08:40 GMT), the Dollar Index, which tracks the greenback against six major currencies,