National Economic Council Director Kevin Hassett said that it is time for former Federal Reserve Chair Jerome Powell to leave the Federal Reserve Board on "Sunday Morning Futures," arguing that doing so would help preserve the central bank's independence.Hassett claimed it is unprecedented for a former Fed chair to remain on the board after his chairmanship ends and said Powell should "move on.""I think that it's time for him to move on and to respect the independence of the Fed," he told Larry Kudlow. "End this sort of partisan divide that's very visible at the Fed, and let's move on to the w...