The Fed writes a white paper on the GSEs

The conclusion's opening paragraph:

The challenges faced by the U.S. housing market today reflect, in part, major changes taking place in housing finance; a persistent excess supply of homes on the market; and losses arising from an often costly and inefficient foreclosure process (and from problems in the current servicing model more generally). The significant tightening in household access to mortgage credit likely reflects not only a correction of the unsound underwriting practices that emerged over the past decade, but also a more substantial shift in lenders’ and the GSEs’ willingness to bear risk. Indeed, if the currently prevailing standards had been in place during the past few decades, a larger portion of the nation’s housing stock probably would have been designed and built for rental, rather than owner occupancy. Thus, the challenge for policymakers is to find ways to help reconcile the existing size and mix of the housing stock and the current environment for housing finance. Fundamentally, such measures involve adapting the existing housing stock to the prevailing tight mortgage lending conditions--for example, devising policies that could help facilitate the conversion of foreclosed properties to rental properties--or supporting a housing finance regime that is less restrictive than today’s, while steering clear of the lax standards that emerged during the last decade. Absent any policies to help bridge this gap, the adjustment process will take longer and incur more deadweight losses, pushing house prices lower and thereby prolonging the downward pressure on the wealth of current homeowners and the resultant drag on the economy at large.

Back with commentary in a bit.