Often unreported, Apple also has $100B in debt. Google and Microsoft have a better net cash and cash equivalents position than Apple.
https://www.macrotrends.net/stocks/charts/AAPL/apple/long-te...
https://www.macrotrends.net/stocks/charts/AAPL/apple/long-te...
So, rather than bring the money home at the high rate, Apple has been taking on debt for U.S. operations while waiting for (and perhaps lobbying for) another tax holiday.