Federal Open Market Committee is expected to only tweak its economic forecasts at its two-day meeting this week, keeping all its options on the table given cross currents in recent economic data, analysts said. Federal Reserve Chairman Ben Bernanke may use his press conference on Wednesday to clarify what conditions would warrant a change in policy, said Tim Porcelli, chief U.S. economist at RBC Capital Markets. The FOMC starts its two-day meeting on Tuesday, and on Wednesday will announce its interest-rate decision at 12:30 p.m. Eastern. The FOMC will then release its quarterly growth, unemployment and interest-rate ... (full story)