Joe Biden doesn't usually get involved in the 2012 race, but when he does he hits hard. To weeks ago, the Vice President dug at Rick Santorum over his views on higher education. And Thursday, parts of his speech to the United Auto Workers in Toledo, Ohio were released today. "Ours is a philosophy that values the role of workers in the success of a business, and values the middle class in the success of an economy," he said. "Stated simply, we're about promoting the private sector. They're about promoting the privileged sector."