An odd couple made an appearance on the University of Wisconsin-Madison campus recently: Tea Party Senator Ron Johnson and Madison's progressive Congressman Mark Pocan. The two were invited to participate in a conversation about the national debt hosted by a local student organization and a bevy of national groups, including the Comeback America Initiative, the Concord Coalition, the Can Kicks Back, and the Campaign to Fix the Debt. On the agenda: debt, deficits, and the economy.