A good Krugman on the somewhat illusory benefits of corporate tax cuts

Again, I think Krugman has a talent for straight forward explanations of economic matters, and this one explaining that corporate tax cutting actually seems to be a lot more about profit-shifting, is a good example.  His final paragraph:

So, am I saying that the case for cutting corporate tax rates is unadulterated nonsense? No, it’s adulterated nonsense. There’s some reason to believe that lower tax rates will, other things equal, have some positive effect on capital formation. But the vision of a global market in which real capital moves a lot in response to tax rates is all wrong; most of what we see in response to tax rate differences is profit-shifting, not real investment. And there is no reason to believe that the kind of tax cut America just enacted will achieve much besides starving the government of revenue.