Fed Chair Powell Says Would Like To Think We Can Get Back To The Custom Of Fed Independence; There Are Widespread Concerns These Attacks Would Continue, That Would Be A Problem; Try To Be Good Stewards Of Public's Money; Waller And Reserve Presidents Are Passionate About That; There Are Things Done At All 12 Fed Banks That Could Be Done At One; There's A Back And Forth On That; Agree With Waller That Fed Presidents Should Not Be Removed On Basis Of Policy Views