Prison operator GEO Group GEO.N fell about 19% after suspending quarterly dividend payments. By Shivani Kumaresan and Medha Singh April 7 (Reuters) - Wall Street's main indexes dipped in choppy trading on Wednesdayas investors cautiously awaited minutes from the Federal Reserve's meeting last month that could offer clues on the central bank's views on inflation and an economic recovery. "It will be interesting to see if the Fed held uniformly to this view in its meeting, or if members at least discussed actions the committee might take if rising rates posed a risk to economic growth."