U.S. stocks came off of session lows by the day's end, though remained in the red. Fears over the Fed's announcement tomorrow, Brexit talk and crude at a three-week low all contributed to losses. Whole Foods (WFM) slipped after the Food and Drug Administration sent a warning regarding violations at its Massachusetts manufacturing plant. Regulations noted a number of 'serious' violations for packing and handling food. Gunmakers pulled back after Monday's rally with Smith & Wesson (SWHC) and Sturm Ruger (RGR - Get Report) sharply lower. Retail store card company Synchrony Financial (SYF - Get Report) fell after upping its loss forecast over the next 12 months. Synchrony also said it was building up its reserves to weather challenges in late-stage delinquencies.