Surely at some point, you'll come to a rather strange predicament for a company, where they have the option of hiring a talented foreigner or a less talented American, but choose to hire the latter purely because of more tax breaks thus opting for lower productivity but more profits. I can't remember the exact figures, but Bill Clinton had an article in Newsweek and one of its stats was that quite a lot of Americans are actually working for foreigners in the US. If you try and protect that 1 job for the American now, you could potentially be losing jobs for many more Americans in the future.
This just isn't that difficult of a problem to identify: First you have this: Then this: Which ultimately leads to this: There is just NO excuse. Taxes on corporations and the wealthy are obviously too damn low when you have UE at 9% yet corporate profits at an all time high and the top 1% are wealthier than they have ever been. The wealth has been redistributed out of the now nearly non existent middle class' hands to the wealthy and to corporations without a subsequent increase in hiring or increase in wages. It must be balanced or there will be hell to pay. Says it all: png upload
"In a country well governed, poverty is something to be ashamed of. In a country badly governed, wealth is something to be ashamed of." Confucius