More and more Americans are taking up ARMs, or adjustable rate mortgages.
ARMS nearly disappeared after the housing crisis of 2008, in part because they made up a huge bulk of the subprime loans that eventually floundered. But in November, more than a tenth of new mortgages in Southern California had an ARM, double the amount compared to a year earlier.
For a look at whether that's a troubling sign is Raphael Bostic, professor of public policy at USC and a former assistant secretary at the US Department of Housing and Urban Development.