File photo illustration of various Euro banknotes lying next to various Swiss Franc notes at a bank in Warsaw, July 18, 2011. Switzerland's competition commission WEKO said March 31, 2014, it had ... more 
File photo illustration of various Euro banknotes lying next to various Swiss Franc notes at a bank in Warsaw, July 18, 2011. Switzerland's competition commission WEKO said March 31, 2014, it had opened an investigation into several Swiss, British and U.S. banks over potential collusion to manipulate foreign exchange rates. REUTERS/Kacper Pempel/Files (POLAND - Tags: BUSINESS) less 
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Reuters | Photo By KACPER PEMPEL / REUTERS
Mon, Mar 31, 2014 6:24 AM EDT