3. Economists at the National Association of Realtors (NAR) in early 2006 were concerned that speculative buying of homes in the US had risen substantially since 2000. "When these (homes are offered for sale) on the market all at once, there could be a glut and prices could soften considerably," NAR chief economist David Lereah said. There worries have by now materialized. What is the likely impact on the US economy