Apple CEO Tim Cook (C), CFO Peter Oppenheimer (L) and Apple Head of tax operations Philip Bullock appear before a Senate homeland security and governmental affairs investigations subcommittee hearing on offshore profit shifting and the U.S. tax code, on Capitol Hill in Washington, May 21, 2013. Apple Inc came under fire on Tuesday at a Senate hearing over an investigation that alleged the U.S. high technology icon has kept billions of dollars in profits in Irish subsidiaries and paid little or no taxes to any government. REUTERS/Jason Reed (UNITED STATES - Tags: POLITICS BUSINESS TPX IMAGES OF THE DAY)