Mitt Romney retroactively attacks his own record on food stamps

It's one of Mitt Romney's big talking points assailing President Barack Obama's economic record, one he delivered in each of the three debates, including the one on foreign policy: When you came to office 32 million people on food stamps. Today, 47 million people on food stamps. One of the reasons he keeps going back to food stamps is that it's a talking point that works in different ways for a...