Federal Reserve Chairman Ben Bernanke testified to Congress Wednesday, alluded to further rate cuts to support an ailing U.S. economy.

Already, the Federal Reserve has lowered the Fed Funds Rate by 2.250% since September 2007.

The graph at right comes from the Wall Street Journal and it highlights a very important correlation between the Fed Funds Rate and mortgage rates.

The correlation is that there is no correlation.

Since the Fed began cutting rates five months ago, mortgage rates on 30-year fixed mortgages are higher, as are jumbo mortgage rates.  ARMs, however, are lower.

Especially noteworthy is how 30-year fixed rates started to spike as the Fed cut rates through January.  Another half-point cut in March could have a similar impact.