Perhaps the Federal Reserve can stave off the day of reckoning by purchasing GSE debt and pumping liquidity into the housing market, but this cannot hold off the inevitable drop in the housing market forever. In fact, postponing the necessary, but painful market corrections will only deepen the inevitable fall. The more people invested in the market, the greater the effects across the economy when the bubble bursts.

No less an authority than Federal Reserve Chairman Alan Greenspan has expressed concern that government subsidies provided to GSEs make investors underestimate the risk of investing in Fannie Mae and Freddie Mac. [source]