Fed Chair Powell set to deliver big Jackson Hole speech Friday

� Fed Chair Jerome Powell is set to deliver what almost certainly will be his last keynote address at the central bank�s annual conclave during one of the most tumultuous times in its history.

� Amid several controversies, Powell could use the speech to at least take a sideswipe at the political distractions even if he holds to past practice of not taking direct aim.

� The speech is billed as an �Economic Outlook and Framework Review,� indicating Powell will take time to provide his views on broad conditions as well as discuss the Fed�s long-term policy goals.