Thomas Peterffy, shown here in 2010 Brendan Smialowski/Getty Images hide caption

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London-based Barclays Bank agreed to pay a $453 million fine over charges it manipulated the London Interbank Offered Rate — LIBOR — a key global interest rate. Oli Scarff/Getty Images hide caption

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The U.S. Supreme Court, 70 years after rejecting Roscoe Filburn's bid to limit the federal government's power to regulate commerce. Chip Somodevilla/Getty Images hide caption

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There is an advantage to strengthening the currency for people in China: It makes their imports cheaper. A clerk counts bank notes in a bank in Nantong, east China's Jiangsu Province. Xinhua /Landov hide caption

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Planet Money

China's Giant Pool Of Dollars

China's foreign-exchange reserves are worth over $3 trillion. That's a problem for China, and for the U.S.

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Yen Jingchang was one of the signers of the secret document. Jacob Goldstein/NPR hide caption

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Demand for quarter, dimes, nickels, and pennies was up this year. AP hide caption

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Dollar coins gathering dust in the Fed's Baltimore brach. John W. Poole/NPR hide caption

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