The plan for a 4.5% mortgage rate the Treasury Department is considering is a good thing for stabilizing house prices and keeping up the demand for housing according to Hubbard and Mayer. Hubbard and Mayer are Dean and vice Dean of the Columbia Business School and Mayer is Professor of Finance and Economics. Their research estimates suggest that real house prices increase by about 75% of the decline in after-tax mortgage payments, so a decline in mortgage payments of 16% would result in approximately a 12% floor on the decline in house prices. In their view with the futures market suggesting a decline in house prices by 12-18% in the next 18 months a 4.5% interest rate might well lead to flat or even slightly higher house prices in 2009. How do they view other proposals to reduce foreclosures by reducing payments onmortgages with the government picking up some portion of the payments or reforming the bankruptcy code to keep people in their homes? In their view stopping foreclosures may not prevent house price declines as much as proponents claim. They now see the market as properly priced. In apaper to be published in the Berkeley Electronic journal of Economic Analysis and Policy they argue that in most markets house values are today lower than what is consistent with the average level of affordability in the last 20 years. The meltdown in mortgage markets and the poor employment outlook can cause prices to deteriorate and overshoot in the other direction. This is where government policy can help stabilize house prices....