America's social safety net and political fights around it

Our new series, "America’s Safety Net," is focused on the complex web of programs meant to help Americans in need. Over the coming weeks, we’ll take an in-depth look at the different forms of welfare in the U.S. Up first, Geoff Bennett and producer Sam Lane spend some time explaining what the American social safety net actually is, who it serves and how it came to look the way it does today.