Brookings provides interesting insight into where foreign companies un-repatriated profits actually are. Much of the capital is already in the US in US bonds or deposits. The author suggests ways in which this money can be taxed that would avoid the 2014 experience of being used just for buybacks and dividends. https://www.brookings.edu/blog/up-front/2017/10/25/repatriated-earnings-wont-help-american-workers-but-taxing-those-earnings-can/
That's interesting. Repatriation talk is just a hollow phrase.