Sen. Elizabeth Warren, of Massachusetts, speaks to a group of supporters at a rally in support of Kentucky Democratic candidate Alison Lundergan Grimes in June. Timothy D. Easley/AP hide caption

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"Who does Washington work for?" asked Sen. Elizabeth Warren, D-Mass., after her bill that would let people refinance student debt was shot down in June. It was a question she came back to repeatedly in an NPR interview on the Goldman Sachs bailout and federal regulation of the financial sector. J. Scott Applewhite/AP hide caption

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Ben Bernanke is seen leaving his Washington, D.C., office on Jan. 31, his last day as chairman of the Federal Reserve. Saul Loeb/AFP/Getty Images hide caption

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Former Goldman Sachs trader Fabrice Tourre walks to a federal court in Manhattan with his attorneys Thursday. A jury found Tourre liable in a massive securities fraud case. Richard Drew/AP hide caption

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