If passed, and for a brief period of time, Trump's dollar repatriation tax scheme brings home some of the +2 trillion dollars sequestered abroad - including some of the billions Apple has parked offshore. http://www.businessinsider.com/trump-gop-tax-reform-plan-bil... There's something to be said for Apple's efforts to level the playing field against the favorable tax & public policies under which Samsung and Huawei…
Or the US Congress could just change the law, close the loophole and require corporations to bring the money home anyway without any tax holidays...
The tax havens are almost all small islands that are dependent on food and fuel imports. Iran-level sanctions would collapse them in a week.