The US has a huge internal market. Slashing corporation taxes to being 100,000 jobs home could be like cutting off your nose to spite your face. Billions of dollars less in taxation revenue to increase employment by about .5%...
Ditto for the UK - cutting corporation tax isn't easy and if it was shouldn't it have been done already?
The Chancellor of the Exchequer, Philip Hammond, floated the idea that taxes could be chopped to bring more business to the UK if negotiations with the European Union turned sour.
But analysts think such a move would be prohibitively expensive at a time when the UK government is still running a large budget deficit.
Martin Beck at Oxford Economics said: “If you look at countries like Ireland or Singapore, they didn’t have anything to lose when embarked on that policy. But for the UK when you’re raising almost £50bn per year from corporation tax, it is much more costly.”
http://www.telegraph.co.uk/business/2017/01/29/uk-cant-afford-tax-cuts-attract-firms-brexit/