Why aren't we buying Oil for Petroleum Oil Reserves while Oil is cheap?

The Bush/Cheney duo is all about supporting their friends and their own Oil interests. Our government should be filling the deep caverns when it comes to the Petroleum Oil Reserves with Oil now in the $65 dollar per barrel price.. Instead they buy Oil at the peak, when the prices were $145/barrel. We should not be encouraging Oil producers in OPEC to cut production, we should be buying the surplus at these prices. Wake up America! Start Buying our Oil needs now!