The Federal Reserve is set to take more action this week to support financial markets and the economy, as the central bank tries to stay predictable given all the uncertainty surrounding the fiscal cliff. To accomplish this, the Fed may announce fresh monthly purchases of $45 billion of Treasurys, economists say. These new purchases will start in the new year after the existing Operation Twist bond-buying program expires. The Fed’s two-day meeting starts Tuesday, and the interest-rate setting Federal Open Market Committee announces its latest monetary policy decision at 12:30 p.m. Wednesday. Federal Reserve Chairman ... (full story)