Harvard economist Martin Feldstein says the government has to intervene to reduce mortgage principals on loans:
I cannot agree with those who say we should just let house prices continue to fall until they stop by themselves. Although some forest fires are allowed to burn out naturally, no one lets those fires continue to burn when they threaten residential neighborhoods. The fall in house prices is not just a decline in wealth but a decline that depresses consumer spending, making the economy weaker and the loss of jobs much greater. We all have a stake in preventing that.