Raphael Bostic turned up the heat on the Fed, calling for a start to tapering as soon as September and to do so more quickly than in the past. "I am in favor of going relatively fast," the Atlanta branch president said. Another month or two of the kind of jobs gains seen in July should push the central bank to be "thinking about what our new policy position should be." Bostic, who is an FOMC voter this year, added he favors "a balanced approach" by reducing both MBS and Treasuries proportionally at the same rate.