Quote from nutmeg:
Congress desired lower interest rates to achvieve their political homwownership goals (a la community reinvestment act).
Congress has no power in regards to the Fed Funds rates. The only power they have is to revoke the Fed Reserve charter, something Ron Paul mentions on a regular basis. Or offer government run & subsidized lending.
The hearings are just a show to appease the masses, in case it's obvious since nothing ever gets accomplished. Although Ron Paul has been waking up some people with his excellent criticism.