WASHINGTON -- The Federal Reserve repeats its pledge to "act as appropriate" to sustain the current economic expansion, now the longest in U.S. history, while noting that most Fed officials have lowered their expectations for the future course of interest rates.

The Fed's statement on interest rates came in its semi-annual monetary policy report, which said that since May "the tenor of incoming information on economic activity, on balance, has become somewhat more downbeat and uncertainties about the economic outlook have increased."

Federal Reserve Chairman Jerome Powell will testify before Congress on the monetary report on Wednesday and Thursday of next week. He will likely face questions on whether the strong jobs report Friday, showing 224,000 jobs created in June, lessens the chances for a June rate cut.