Apple has a lot of money but it is out of reach for them. Imagine having $100 million in your bank account but not being able to use it. Why can't they use it. Because if they do it will count as an income tax and so it would be expensive to to bring it home. To shareholders, this is a problem as the money is doing nothing and making more money. Thanks to Trump's tax plan, Apple can bring money home and invest it.
