Now Playing: 09-18-12 Marketplace

Mitt Romney said almost half of Americans don't pay federal income taxes. We look at the numbers behind his remarks. Plus, under health care reform, Medicaid stands to get a whole lot bigger when millions of poor people are added to the docket. So when the feds offer states money to cover the expansion, taking it seems like a no-brainer, right? Not so much. We tell you why at least five governors are saying thanks, but no thanks. We explore why oil prices plummeted yesterday and a Ford executive talks about marketing cars to today's youth.