Businesses men stand at the entrance to the Treasury Department on September 21, 2016 in Washington, D.C. The Federal Reserve kept its benchmark interest rate unchanged for the sixth straight meeting, saying it needs to see a bit more sign of strength in the US economy.On balance she expressed more concerns about the threat of overheating, saying the current pace of job creation, at 180,000 a month, "is not sustainable over the longer run." / AFP PHOTO / Andrew CABALLERO-REYNOLDSANDREW CABALLERO-REYNOLDS/AFP/Getty Images