European regulators’ recent finding that Apple avoided billions of dollars in taxes by stashing its profits in Ireland, a known tax haven, put the tech giant in an unwelcome spotlight. But Apple’s tax dodging is just the tip of a huge iceberg of offshore corporate tax avoidance. According to a new report, Offshore Shell Games 2016, by CTJ, ITEP & USPIRG, American firms are avoiding up to $718 billion in U.S. taxes on $2.5 trillion in profits held offshore.