An agency called the British Bankers Association surveys a group of banks everyday asks the following: If you were to borrow money this morning at 11am London time what you would have to pay for it?

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As a Harvard law professor, Warren pushed Congress hard to create the agency, much to the chagrin of the bankers.

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Earlier this year, the Commissioners pointed out, the agency unveiled its largest insider trading case since the late 1980s, starring an array of bankers and hedge fund traders.

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