First, its dominance requires permanent government subsidies. Second, it amortizes slowly, exposing homebuyers to years of unnecessary default risk. Third, it was responsible for two taxpayer bailouts in the last 20 years.
Most important, these mortgages may be behind a new bubble."
'via Blog this'
Bubble fears are also justified because of the GOP attack on regulation, the failure to revive Glass-Steagall and the propensity of traders to put us all at risk.