AdvertisementFor Banks 'Too Big To Jail,' Prosecutors Count On A Promise To Behave04:08Download AudioResumeMarch 24, 2015Jim ZarrolifacebookEmailThe logo of Swiss bank UBS is seen at the company's headquarters in Zurich. U.S. officials are investigating whether UBS and Barclays manipulated currency rates at a time when they were already operating under a deferred prosecution agreement for manipulating interest rates. (Reuters/Landov)