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Now Playing: 12-08-11 Marketplace Mid-day Update

Jon Corzine heads to Congress today to answer for the collapse of brokerage firm MF Global. The European Union is looking to the International Monetary Fund for bailout help, and that could have ripple effects in the U.S. Reporter Sally Herships looks at what other businesses can gain from big-box storse like Costco and Walmart. And the countdown to a big European summit is nearing its end.