U.S. Federal Reserve

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Switzerland's Timea Bacsinszky returns the ball to France's Alize Cornet, during their singles match, in the Fed Cup tournament between France and Switzerland, at the Coubertin stadium in Paris, Sunday Feb. 9, 2014. (AP Photo/Remy de la Mauviniere)

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France's Alize Cornet reacts after missing a point during her singles match against Switzerland's Timea Bacsinszky, in the Fed Cup tournament between France and Switzerland, at the Coubertin stadium in Paris, Sunday Feb. 9, 2014. (AP Photo/Remy de la Mauviniere)

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Italy's Camila Giorgi, right, celebrates with a teammate after Giorgi defeated United States' Madison Keys during a Fed Cup world group tennis match Saturday, Feb. 8, 2014, in Cleveland. (AP Photo/Tony Dejak)