The most important point is, in a time of crisis, there is no way out but for the government to be bold and aggressive.

Our economy isn't going to recover until the housing market finds its footing.

Potential home buyers have a two-step decision process. First, they determine whether they can afford to make a purchase - does their income safely cover their mortgage payment? Then they determine whether owning is a better financial choice than renting - are the costs of owning a home lower than the cost of renting it?

There is plenty of blame to go around for the U.S. housing bubble, but not much of it belongs to Fannie Mae and Freddie Mac. The two giant housing-finance institutions made many mistakes over the decades, some of them real whoppers, but causing house prices to soar and then crater during the past decade weren't among them.

Indeed, the FHA was born out of the Great Depression, which was also caused in significant part by a foreclosure crisis. Mortgages in the early 1930s were mostly three- to five-year 'bullet' loans, which did not amortize and were due in full at maturity.

My policy is I will help any policymaker who asks, whether they be a Republican or a Democrat.

Lenders look at potential borrowers from many angles before extending credit: How much of its income will a household need to put into debt repayment? How large is the down payment? Does the borrower have a job with a stable income? What is the borrower's credit score?