David and Chana's toxic asset, which has acquired the nickname Toxie, gets sick. And the payments that it's supposed to provide them every month stop.

Chana Joffe-Walt continues her story about the phenomenal rise in disability payments over the last 30 years, since President Bill Clinton signed legislation pledging to "end welfare as we know it." Turns out, two private sector groups have really contributed to the growing disability roles. One is a group of people you'd probably expect, the other is a shock.