Wall Street lower ahead of Fed minutes

Wall Street was lower on Wednesday as investors awaited the release of the minutes of the Federal Reserve's July policy meeting. The Fed left interest rates unchanged at its meeting last month but said near-term risks to the economy had diminished, leaving the door open for a possible rate hike this year. Investors will parse the minutes, due at 2:00 p.m. ET (1800 GMT), for hints on when the Fed would next raise rates, in light of New York Fed President William Dudley's hawkish comments on Tuesd