Book excerpt: The most widely used and most widely referenced "basic book" on Housing Policy in the United States has now been substantially revised to examine the turmoil resulting from the collapse of the housing market in 2007 and the related financial crisis. The text covers the impact of the crisis in depth, including policy changes put in place and proposed by the Obama administration. This new edition also includes the latest data on housing trends and program budgets, and an expanded discussion of homelessnessof homelessness.