Live On CNBC, Fed's Hammack Says Supply Shocks Are Tricky For Monetary Policy; Doesn't See Job Market As Source Of Inflationary Pressure; Inflation Expectations Look Reasonably Well Contained; Says It Is A 'Tough Time' For Fed Policy Making; It's Not Clear Right Now What AI Will Do To Economy; Says Fed Independence Is Really Important; Amid Threats To Fed, Focused On Doing Job; Looking Forward To Further Debates On Balance Sheet; Reserve Demand Issues Are Key To Fed Balance Sheet Size