WASHINGTON -U.S. Federal Reserve officials are in "uncharted waters" with no clear historical guide as they set monetary policy in an environment with inflation falling but no increase as yet in the unemployment rate, Richmond Fed staff said in a new research note analyzing a central bank rate cycle they deemed "unlike any other." "The current cycle is the first time over the entire postwar period the (Federal Open Market Committee) has made significant progress in lowering inflation without an associated increase in the unemployment rate," Richmond Fed staffers including senior adviser Pierre-Daniel Sarte wrote in the paper, published Wednesday on the bank's website. "The curr...Keep on reading: US economy in ‘uncharted waters’ as inflation falls with low unemployment -study