U.S. Federal Reserve

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United States' Madison Keys returns a ball to France's Caroline Garcia during a Fed Cup singles world group playoff tennis match Sunday, April 20, 2014, in St. Louis. Garcia won 6-4, 6-3.(AP Photo/Jeff Roberson)

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United States' Madison Keys reacts after giving up a point to France's Caroline Garcia during a Fed Cup singles world group playoff tennis match Sunday, April 20, 2014, in St. Louis. Garcia won 6-4, 6-3.(AP Photo/Jeff Roberson)

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France's Caroline Garcia serves to United States' Madison Keys during a Fed Cup singles world group playoff tennis match Sunday, April 20, 2014, in St. Louis. Garcia won 6-4, 6-3.(AP Photo/Jeff Roberson)

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United States' Madison Keys returns a ball to France's Caroline Garcia during a Fed Cup singles world group playoff tennis match Sunday, April 20, 2014, in St. Louis. Garcia won 6-4, 6-3.(AP Photo/Jeff Roberson)

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Czech Republic's Petra Kvitova returns a ball to Italy's Roberta Vinci during their Fed Cup semifinal tennis match in Ostrava, Czech Republic, Sunday, April 20, 2014. (AP Photo/Petr David Josek)

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Italy's Roberta Vinci reacts after loosing a point to Czech Republic's Petra Kvitova during their Fed Cup semifinal tennis match in Ostrava, Czech Republic, Sunday, April 20, 2014. (AP Photo/Petr David Josek)

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Italy's Roberta Vinci returns a ball to Czech Republic's Petra Kvitova during their Fed Cup semifinal tennis match in Ostrava, Czech Republic, Sunday, April 20, 2014. (AP Photo/Petr David Josek)

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Czech Republic's Petra Kvitova serves a ball to Italy's Roberta Vinci during their Fed Cup semifinal tennis match in Ostrava, Czech Republic, Sunday, April 20, 2014. (AP Photo/Petr David Josek)

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Czech Republic's Petra Kvitova returns a ball to Italy's Roberta Vinci during their Fed Cup semifinal tennis match in Ostrava, Czech Republic, Sunday, April 20, 2014. (AP Photo/Petr David Josek)