Mortgage Debt & Home Equity

I just read Jennifer Taub's outstanding book Other People's Houses, which is a history of mortgage deregulation and the financial crisis.  The book makes a nice compliment to Kathleen Engel and Patricia McCoy's fantastic The Subprime Virus.

Paul Krugman has a column today about the blind, fundamentalist faith in efficient markets.  This is a phenomenon that Stephen Lubben and I have been discussing recently (did Krugman just preempt our paper idea?), as we've both encountered it in the financial regulatory policy debate: 

The U.S. Supreme Court has denied a petition for writ of certiorari in Bank of America v. Sinkfield, an 11th Circuit case raising the issue whether a junior lien wholly unsupported by collateral value can be stripped off in chapter 7. 

Conventional wisdom views bankruptcy as a place that protects homeowners and homeownership.  One of the primary reasons Chapter 13 allows debtors to retain all property of the estate, whether exempt or not, is to allow debtors to hang on to their personal residences even though applicable exemption law would not otherwise allow this.  OK Chapter 13 doesn’t permit modification of residential mortgages, but it does allow debtors to decelerate and cure mortgages in default, providing some consumer debtors some protection from foreclosure.  Chapter 7 is