The tax parked off-shore basically belongs to a dozen companies all of whom already spend heavily on investment. 

A lot will probably go to buy-backs and dividends as they did with previous amnesties - yes, it's been tried before and we know what happens.  Don't get me wrong; I love dividends, buy-backs not so much.

US Corporations are awash in cash domestically, so it isn't the absence of capital that is holding back investment.

A large chunk will stay abroad to fund international operations.

Since the US is the only country in the world that taxes overseas earnings, there is nothing to tell JT (at least on this particular file).