We carry the seeds of our own destruction they say. So this is a good thing. America should take care of their own citizens first. It is a good thing. Also there is a school of thought that says prosperity of any country is primarily a function of the kind of citizens they have, and how the country is able to leverage the intellect of its citizens. An important thesis of recent discussions of American prosperity is that a lot of it has been built up by the immigration of enterprising people into the US. So it can be argued that American prosperity is at the cost of prosperity of the rest of the world. And most of these things have compounding effects. The more intellect gathers in the US, that country can leap frog into the future at a far more vigorous pace than other could if most of these people were left inside their own countries. But in any case, these current events give us an opportunity into testing the thesis of American prosperity. Either balance will be brought to how global prosperity is distributed, or finally a country will be able to take care of its own citizens first. Either way this is all a great thing.