AdvertisementFor Banks 'Too Big To Jail,' Prosecutors Count On A Promise To BehaveMarch 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)