The Federal Reserve committee that sets U.S. monetary policy meets today and tomorrow.

The number two official at the U.S. Federal Reserve, Vice Chair Janet Yellen, has thrown her weight behind a major change in Fed policy. The issue is how the central bank should schedule its stimulus policies.

Yesterday Federal Reserve Chief Ben Bernanke laid out the Fed's new economic stimulus plan. It's round 3 of so-called quantitative easing. The Fed will buy $40 billion worth of mortgage-backed securities every month, until it decides the economy has improved.

Yesterday, Ben Bernanke announced the Federal Reserve is going to do another round of what’s called “quantitative easing.” The Fed will buy $40 billion worth of mortgage-backed securities every month until Bernanke and his colleagues are satisfied the job market -- and the economy -- have improved.